Instruction

Select the best answer to complete the sentence.

1. The survey shows that the -------- of air pollution for residents is worse than expected.

2. Who has left -------- ? It is only five o'clock..

3. Even today -------- Kiwi is still seen now and then in New Zealand

4. -------- fire, there are some emergency exits in this building.

5. There was -------- traffic on our way to the station.

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