một thửa ruộng hình chữ nhật có chu vi 600m , chiều dài hơn chiều rộng 190m . diện tích của thửa ruộng là . cho mình thêm cái phương trình

Past simple + Present simple + Present continuous Exercise 1: Rewrite the sentences 1. often/ I/ the/ museum/ Saturday/ visit/ on 2. My mother/dress/making/is/now 3. The weather/ but/ cold/ was/ today / is/ it/ hot /yesterday 4. He/ English club/ to/ went/ the/ last Sunday 5. She/ stays/ night/ up/ late/ never/ at 6. She/ village school/ at/ taught/ a/ two years ago 7. Every Sunday/ goes cycling/ he/ his mother/ with 8. cooking/ sister/ in/ my/ is/ dinner/ kitchen/the 9. do not/ Jane/ usually/ breakfast/ morning/ in the/ have. 10. tired/ I/ when/ bicycle/ to/ school/ am/ always/I

Tính hoặc rút gọn : 2+4+6+...+100 2+2^3+2^5+....+2^99

Giúp em nhé, ai làm xong trước em vote 5 sao

Vẽ anime or chibi '-' Yc: Digi, full màu, có tâm, ko vi phạm luật :v

vẽ anime hoặc chibi nào :333 mn thấy dễ thương ko nè, hàng ms về, xĩu x3 !!!

III. Complete the following sentences 1. When I met her, …………………………………………………………. 2. Because it rained heavily, ………………………………………………………….. 3. While they were eating, ……………………………………………………………… 4. Although she had a bad cold, ………………………………………………………… 5. At 7 p.m yesterday evening, my family ……………………………………………… IV. Give the correct forms of the verbs in parentheses. 1. At 7 p.m yesterday, I ( have ) …………… dinner with my family. 2. They ( build ) ………….. this hospital since last December. 3. What ………your father ( do) …………. at this time yesterday? He ( watch ) …………TV 4. ……. They(practice) …………( rehearse ) …………a play at5p.m last Sunday? No, they …….. They ( sing ) …………….English songs. 5. I don’t think I (go)…………………………………… out tonight. I’m too tired. 6. Where……….. you (used )………(spend)……………... your summer holiday , Tam ? 7. In my country it (not rain)……………………………………… much in winter. 8. I (not know)…………………. how to dance when I (be)………... six years old. 9. My father (not like)…………………………… drinking beer but yesterday he (have)…….. two big glasses of beer because he (be)……………. happy to receive my mother’s news. 10. Last week I (send)……………. Mary a letter but she (not reply)………………since then and I (be)………………. very sad now. 11. My parents (help)……… me ( do ) ………….my homework at 8p.m yesterday. 12. Paul (be)…………. used to ( speak ) ……………… outside the class. 13. …………..you ever ( see ) ……………. Hippos? 14. Mai ( guide ) ……………….. the tourists how ( buy ) ………….. tickets in the museum at 9a.m yesterday. 15. What …………the students in class 7A ( do ) …………. at this time last Monday? V. Give the correct forms of the verbs in parentheses. 1. My mother is saving money because they ( buy) ……………… a new house next year. 1. She is preparing her trip now. She (visit) ………………………… her friends tonight. 2. What ..………you (do)………….. this Sunday? - I (visit).............................. my grandparents. 3. Excuse me, I ......................... (look) for a phone book. Is there one near here? 4. She usually....................................dinner for the family. (cook) 5. What ……. your plan ( be ) this summer vacation ? I (travel ) ………….. around the world. 6. Listen! Can you hear those people next door? They ......................... (shout) at each other again. 7. The children................basketball now. (play). They always ( play ) …….. it after school. 8. Why ......... you ( buy ) …….. a lot of flour? Because I ( make ) …………… a big birthday cake for my son tonight. 9. The boys...................................a play for their school show on T.V at the moment. (rehearse) 10. They......................their mother with the housework everyday. (help)

Hoàn thành các PTHH sau: Fe 2 O 3 + H 2 → Fe x O y + X 1 X 2 + X 3 → Na 2 SO 4 + BaSO 4 + CO 2 + H 2 O X 2 + X 4 → Na 2 SO 4 + BaSO 4 + CO 2 + H 2 O X 5 + X 6 → Fe 2 (SO 4 ) 3 + SO 2 + H 2 O X 3 + X 7 → BaCO 3 + H 2 O X 3 + X 8 → BaCO 3 + CaCO 3 + H 2 O

Vẽ chbi vui trên app full màu và line pic kí pic ko vẽ có tâm

I. Supply the verbs in past progressive tense. 1. At this time last year, I ___________________an English course (attend) 2. Jim ________________ under the tree when he heard an explosion (stand) 3. The boy fell and hurt himself while he _________________ a bicycle (ride) 4. When we met them last year, they______________ in Santiago (live) 5. The tourist lost his camera while he________________ around the city (walk) 6. The lorry _______________ very fast when it hit our car (go) 7. While I ____________________in my room, my roommate ___________________ a party in the other room (study/have) 8. Mary and I___________________ the house when the telephone rang (just leave) 9. We __________________ in the café when they saw us (sit) 10. I ___________________down the street when it began to rain (go) II. Supply the verbs in simple past or past progressive tense. 1. I ________________ (call) Mr Wilson at 9 last night, but he (not be)_________________at home. He (study) _______________ at the library 2. I _________________ (not hear) the thunder during the storm last night because I ________________ (sleep) 3. It was beautiful yesterday when we went for a walk in the park. The sun______________(shine). The birds_____________(sing) 4. My brother and sister ________________ (talk) about something when I ________________ (walk) into the room. 5. Tom went to his friends ‘house, but the boys ___________________ (not be) there. They (play)_____________soccer in the vacant lot down the street. 6. The little boy _______________ (fall) asleep while his mother___________________ (read) him a story. 7. I really enjoyed my holiday last January. While it_______________(snow) in Iowa, the sun ______________ (shine) in Florida. 8. While Ted _______________ (shovel) snow from his driveway yesterday, his wife _________________ (bring) him a cup of hot chocolate. 9. John _________________ (have) a car accident last week. He __________________ (drive) down the street when suddenly a lorry __________________ (hit) his car from behind. 10. Ten years ago, the government _______________ (decide) to begin a food programme. At that time, many people in the rural areas _______________ (starve) due to several years of drought. 11. They ___________________(wait) for me when I _________________ at the station (arrive) 12. She ________________ (swim) in the sea when I ___________________ her (see) 13. ___________________they__________________(play) tennis when it _________________ raining (start)? 14. We _____________ (drive) home from the theatre when the police _______________(stop) us. 15. The wind __________________ (blow) very hard when I ________________(go) out this morning. 16. When she __________________ (leave) him, he _____________________ (become) quite ill. 17. I _______________(be) looking for some photos when you rang but I ______________(not find) them.