II. Write the correct form of each verb in brackets. 1. If you put the glasses into very hot water, they……………………(crack). 2. If Peter………………(be) late, we will wait for him. 3. No one…………………..(help) if you don’t help yourself. 4. If you boil water, it…………...……(disappear) into the atmosphere as vapor. 5. If it rains tonight, I…………………..(not go) for walk. 6. The town will flood if there …………………(be) a downpour. 7. The bear will attack you if you…………………..(provoke) it. 8. If we sit too far from the screen, I……………..(not be) able to see the film. 9. If there is an earthquake, the villagers ……………….(stay) in the shelter. 10. If we plant more trees, the air………………….(be) fresher. III. Rewrite the sentences, so that their meaning stays the same, using the beginning given for each. 1. We must leave now, or we will miss the plane.  If we don’t …………………………………………………………………… 2. Be careful or you may fall.  If you…………………………………………………………………………. 3. Hurry up or we’ll be late for the concert.  If……………………………………………………………………………… 4. Our sources of energy will soon end if we don’t try to save them.  Unless………………………………………………………………………… 5. You will catch a cold if you don’t keep your feet dry.  Unless………………………………………………………………………… 6. If she doesn’t work harder, she’ll lose her job.  Unless…………………………………………………………………………

I. Choose the best answer (A, B, C or D) to complete each of the following sentences. 1. We should use reusable water bottles………………..plastic ones. A. because B. instead of C. despite D. however 2. Walking to school will help ……………. air pollution. A. refill B. reuse C. recycle D. reduce 3. One of the bad things about…………..is that it can make fish die. A. noise pollution B. soil pollution C. water pollution D. air pollution 4. We should go to school by bike to ……………the energy. A. save B. protect C. pollute D. spray 5. Don’t forget to……………..the lights when going out! A. turn on B. turn off C. close D. shut down 6. What can we do……………….air pollution? A. reduce B. to reduce C. reducing D. to reducing 7. These three Rs …………..reduce, reuse, and recycle. A. stand up B. means C. stand for D. ask for 8. It is a good idea to……………..our clothes with our friends or cousins. A. change B. turn C. send D. swap 9. If we use……………….papers, we will save a lot of trees. A. less B. fewer C. more D. much 10. If we all use……………….bags, we’ll help the environment. A. new B. cheap C. reusable D. reduced

Giúp em câu 25 vs ạ hứa cho nhiều sao cảm mơn mọi người ạ

X x 1\ 4 + X x 1\ 5 +X x 2 = 19,2

nhanh nhất = CTLHN +5* + cảm ơn Mọi người làm nhanh giúp mình nhé, chỉ ghi đáp án thôi, không cân giải thích

Làm hết hộ em bài 5 ạ Xong em vote 5 sao

An tham gia đấu cờ và đã đấu 20 ván. Mỗi ván thắng được 10 điểm, ván thua bị mất 15 điểm. Sau đợt thi An được 50 điểm. Hỏi An đã thắng bao nhiêu ván?

Làm giúp mik cái avatar giống như hình dưới Tone cam nhạt Chữ Min Thêm quả cam trên đầu Pic kí pic k kí Đẹp xíu ạ! NL:Dạo nay thấy avatar này nhiều thật.

. Một hộp sữa cân nặng 210g, nếu rót đúng lượng sữa trong hộp ra thì hộp sữa cân nặng 170g. Vậy vỏ hộp nặng là

cho A4 = x; B2 =2x tìm x để a//b