III. Choose the best answer A,B,C or D to complete the sentences below. (1,5pts)

1. Air_______, together with littering, is causing many problems in our cities today.

A. polluting                 B. polluted                     C. pollute                             D. pollution

2. The roof of the building _____________ in a storm a few days ago.

A. has damaged           B. has been damage      C. damaged                          D. was damaged

3. Three hundred people were left _____ by the earthquake.

A. homeless                  B. house                         C. home                               D. property

4. The train to Ha Noi ______ at 7a.m tomorrow.

A. to leave                   B. left                             C.leaves                               D. leaving

5.  Linh: Mai has won the first prize.  - Ha:            ­ !

A. That's awesome      B. Oh dear                        C. How terrible                 D. That's shocking

6. If you         the president, what would you do to help the environment?

A. would be                B. are                                C. had been                                    D. were