Question 2: Choose the best answer.

1. When you see your friend off at the station, you say: “_____________!”

A. Lucky you              B. Good night             C. Have a good journey          D. You’re welcome

2. _____________ are used to kill insects and weeds so as to help crops grow better.

A. Pesticides               B. Dynamite                C. Exhaust fumes                    D. Creatures

3. _____________ the pollution in that river is awfully bad, the water is too contaminated to drink.

A. Because of             B. Since                       C. When                                  D. Although

4. You can borrow my book _____________ you bring it back by Monday.

A. as long as                B. unless                      C. so that                                 D. while

5.___________ flowers are made by hand and by machine.

A. Natural                   B. Artificial                 C. Tropical                              D. Beautiful