4 : Có 3 lọ đựng riêng biệt các khí sau: oxi, không khí và hidro. Bằng thí nghiệm nào có thể nhận ra chất khí trong mỗi lọ

Các bạn ơi các bạn giúp mình bài này ạ . Làm chi tiết hộ mình nhé ạ :

1. Write the past form ( V3) of the following verbs (5ms) eg : do-done a. break- .......... b. blow- c. use – d. dry- e. make - 2. Do as directed (5ms) a. It is easy (do/ did/ to do/ doing) this exercise. (Chose the correct answer.) b. I am very excited that...................................................... c. When will we do the English test? A. When will the English test do? B. When will the English test done? C. When will the test be done? D. When is the English test done? (Complete the sentence.) (Choose the correct answer.) d. Finally, put the books away and take the paper out of the cloth to dry in the sunlight. ( Rewrite the sentence in the passive form.)

giúp mình câu này 11-11x=21-5x

Giúp mik câu này với:they planted these trees last year ->these...

giải giúp với ạ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

giúp mình với nha mn ai giúp được mình sẽ vote 5 sao và cảm ơn nha

Cấu tạo máy phát điện xoay chièu gồm những bộ phận nào ?

II. Choose the best answer for each of the following sentences. 1. The ……………atmosphere is felt around all the villages. A. festive B. festival C. air D. tradition 2. A lot of cultural and ………….activities are held as part of the Flower Festival in Da Lat. A. arts B. artist C. artistic D. art 3. It is…………….to see elephants racing in the Elephant Race Festival in Dak Lak. A. amaze B. amazing C. amazed D. amazement 4. A lot of dancers go to Rio de Janeiro to…………the Rio Carnival. A. play B. take C. attend D. follow 5. Everybody has gone to the…………..festival. A. music B. musical C. musicians D. musician 6. The…………..of the Rio Carnival is the Samba Parade. A. importance B. best C. highlight D. performance 7. People in Cannes take the Cannes Film Festival………….a very serious way. A. in B. at C. on D. with 8. The festival………….every year at the end of August. A. takes B. takes place C. occur D. held

1. They ______ table tennis when their father comes back home. A. will play B. will be playing C. play D. would play 2. I _______ in the room right now. A. am being B. was being​C. have been being D. am 3. I ______ to New York three times this year. A. have been B. was C. were D. had been 4. Jack ________ the door. A. has just opened B. open​C. have opened D. opening 5. Since _______, I have heard nothing from him. A. he had left B. he left C. he has left D. he was left 6. I will be glad if he _______ with us. A. had gone B. did go C. went D. goes 7. Her father ______ when she was a small girl. A. dies B. died C. has died D. had died 8. I have never played badminton before. This is the first time I _____ to play. A. try B. tried C. have tried D. am trying