khí nào sau đây làm thanh lồng ánh sáng? a.N2 B.O2 C.CO2 D.SO2

Các câu hỏi liên quan

Change these sentences into the passive voice Part A. Present Perfect tense 1. Pollution from factories has destroyed many lakes and rivers. ....................................................................................................................................................... 2.My brother hasn’t finished his exercises. ....................................................................................................................................................... 3. They have discovered oil at the North Pole.  ...................................................................................................................................................... 4. Nam’s father has just bought another villa.  ...................................................................................................................................................... Part B. Modal verbs 5. Some people will interview the new president on TV.  ...................................................................................................................................................... 6. They can’t hold the seminar in the hall.  ...................................................................................................................................................... 7. Tom has to pay the bill before the second of the month.  ...................................................................................................................................................... 8. They should send it to us immediately.  ......................................................................................................................................................

I- Put each verb in bracket into a suitable tenses or forms(5pts) 1- It’s a pity you missed the party. If you (come).........................you (meet) ......................... my friend from Hungary. 2- If we (have) .........................some tools, we (be) .........................able to repair the car, but we haven’t had any with us. 3. Fish and many animals are killed by .......................... in their habitat. (pollute) 4- It’s a beautiful house, and I (buy) .........................it if I (have) .........................the money, but I can’t afford it. 5. In many developing countries, water pollution is usually a leading cause of ......................... (die) II- Rewrite each sentence, beginning as shown(5pts) 1. I’ll call the police if you don’t leave me alone. Unless........................................................................................................................................ 2. It’s a shame we don’t have a TV. I wish......................................................................................................................................... 3. Aquatic life suffers to dies because there is thermal pollution. Because of................................................................................................................................ 4. There are asthma, allergies and other respiratory illnesses when air pollution happens. (leads to) .................................................................................................................................... 5. Make me some coffee, and I’ll give you some sweets. If..........................................................................................................................................…