MULTIPLE CHOICE I. Choose the best answer to complete each of the following sentences. 1. If people ______ public transport, there will be less pollution. A. use B. will use C. can use D. used 2. ______we miss the last bus, we will have to walk home. A. As B. When C. If D. Unless 3. People have ________this beach with a lot of trash. A. spoiled B. cleaned C. collected D. protected 4. He got a ________ for packing on double yellow lines. A. fee B. ticket C. fine D. token 5. By sticking labels over the address you can _______. envelopes. A. recycle B. reduce C. reuse D. return 6. Because plastic bags are very hard to ________, they will cause pollution. A. dissolve B. wrap C. tear D. collect 7. These materials can be _____ into other packaging products. A. reused B. reduced C. removed D. recycled 8. If we _______waste paper, we will save a lot of trees. A. repeat B. recycle C. rewrite D. remake 9. If we plant more trees in the schoolyard, the school will become a_____ place. A. greener B. darker C. dirtier D. more polluted 10. “Why do you often forget to_______ the lights when you go out of the classroom?” A. reduce B. turn off C. close D. shut down 11. “What can we do ____ air pollution?” A. reduce B. to reduce C. reducing D. to reducing 12. You can save money while shopping by only buying _______ you need. A. what B. a C. this D. that 13. Please collect all recyclable materials, and take them to the ______. factory. A. recycle B. recycled C. recyclable D. recycling 14. This newspaper is made of _______paper. A. recycle B. recycled C. old D. waste 15. If we all use _______ bags, we’ll help the environment. A. new B. cheap C. reusable D. reduced

Tiếp theo vẫn là chuyên mục calli Calli chữ: chị Bạch xênh gái =)) Y/c: Tradi not Digi Cóa tâm + đẹp Ko phạm luật Tone màu xa lánh + xanh dương NL: hóng UvU của aii zào nhận nà =))

|x-3| có bằng (x-3)^2 không. Vì sao?

XXII. Rearrange the words to make sentences. 1. Alice/ like /sports /much/ doing/ very/ doesn’t. ……………………………………………………………………………………… 2. the / the/ No / Nile. / longer/ is/ river / than / in / world ……………………………………………………………………………………… 3. practise/ do / table tennis / ? / you / How / playing/ often .................................................................................................................................... 4. university. / go / not/ to / might/ He ……………………………………………………………………………………… 5. this/ programme / like / boring. /so / because / I/ it’s/ don’t ....................................................................................................................................

1. Thế nào là mẫu thống kê? Trình bày các cách thu gọn mẫu. Lấy ví dụ minh họa và thu gọn mẫu đó theo các cách khác nhau. các b giúp mình câu này với ạ, mình còn vướng phần vế sau ạ

Viết các câu sau với mệnh đề if (1,2,3) 1.It was raining. That's the only reason I didn't take the children to the beach. =>If.... 2. When I bought this house I didn't realize that in summer planes skimmed the roof every five minutes.(If I (knew)...I(not buy)etc.) =>If....

The children have gone ....... A. for shopping B. to shop C. shopping D. to shopping

Câu 1: Trong các phản ứng sau, những phản ứng nào đúng (có xảy ra): a. 2NaHSO4 + BaCl2 → Ba(HSO4)2 + 2NaCl b. 2NaHSO4 + BaCl2 → BaSO4 + Na2SO4 + 2HCl c. NaHSO4 + BaCl2 → BaSO4 + NaCl + HCl d. 4NaHSO4 + BaCl2 → Ba(HSO4)2 + 2Na2SO4 + 2HCl Câu 2: Trong các phản ứng sau, những phản ứng nào đúng (có xảy ra): a. Mg(HSO4)2 + 2NaOH → Mg(OH)2 + 2NaHSO4 b. Mg(HSO4)2 + NaOH → NaHSO4 + MgSO4 + H2O c. Mg(HSO4)2 + 2NaOH → Na2SO4 + MgSO4 + 2H2O d. Mg(HSO4)2 + 4NaOH → 2Na2SO4 + Mg(OH)2 + 2H2O

XXI. Choose the correct answer A, B, C, or D to finish the sentences. 1. We _______________ go to the party. We’re going to a wedding. A. Couldn’t B. won’t be able to C. Will can’t D. want be able to 2. A: Can you lend me some money? B: Sorry. I ___________ . I haven’t got any either. A. Couldn’t B. am not able to C. Can’t D. won’t be able to 3. They________ go. The weather was too bad. A. Weren’t able to B. cant C. Won’t be able to D. couldn’t 4. She________ come on holiday next month if her parents give her permission. A. Can’t B. will be able to C. Could D. couldn’t 5. The fishing boat sank but luckily all the crew ________ save themselves. A. Couldn’t B. will be able to C. Were able to D. can 6. Listen! We ____________ hear a train in the distance. A. Can B. could C. Will be able D. were able to 7. I don’t think he ___________ win the next competition. A. Could B. Can’t C. Won’t be able to D. Will be able to 8. Michael is very proud to __________ play in a jazz-band. A. Be able to B. Can be able C. Will be able to D. Could be able 9. When I was five, I _________ swim. A. Can not B. Could not C. Am not able to D. Will not be able to 10. I have to go to a meeting tomorrow night so I _________ come to the party. I’m very sorry. A. Can’t B. Wasn’t able to C. Couldn’t D. can’t be able to

Vẽ nữ sinh mặc áo dài nhe, vẽ tranh chì, có đánh phối đàng hoàng, cấm vẽ kiểu học sinh tiểu học nha , cấm màu mè ... T^T ----> Dáng đẹp đẹp xíu, đừng lép nha ;-;