Put the verbs in brackets in the correct form.
1. Last night, Peter (go) __________ to the supermarket before he (go) __________ home.
2. Four countries __________ (visit) by Mr. Brown so far.
3. London __________ (have) a pollution of eight million people.
4. If you (not break) __________ the rules, the teacher will not punish you.
5. If the factory (continue) __________ dumping poison into the lake, all the fish and other aquatic animals will die.
6. Before she (watch) __________ TV, she (do) __________ homework.
Choose A, B, C, D for each gap in the following sentences.
1. Emergency teams are still clearing up the __________ from the plane crash.
A. debris B. dust C. piece D. waste
2. Thousands of buildings and houses were completely destroyed when the earthquake __________ the city.
A. fought B. struck C. happened D. arrived
3. The Maori in New Zealand greet each other by __________ their noses.
A. punching B. touching C. blowing D. shaking
4. If you __________ the president, what would you do to help the environment ?
A. are B. had been C. were D. was
5. Singapore is famous for its __________ and green trees.
A. cleanliness B. cleanly C. cleaning D. clean
6. Air __________, together with littering, is causing many problems in our cities today.
A. pollute B. pollution C. polluting D. polluted
7. If we __________ water carefully, more people will have fresh water.
A. will use B. would use C. using D. use
8. A severe tropical __________ is called a typhoon.
A. drought B. rain C. flood D. storm
Put the verbs in brackets into the correct form
1. The Statue of Liberty in New York is a monument which (symbolize) __________ freedom.
2. There are about 750 million English speakers in the world, and this number (increase) __________ fast.
3. Factories (not dump) __________ waste into rivers if the government fines them heavily.
4. The kangaroo (become) __________ a symbol of Australia since 1973.
5. If there were more trees in this area, the air (be) __________ fresher.
6. The earthquake occurred at midday when they (have) __________ lunch.