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. You can’t chop onions -------- crying.

3. The boy was made -------- off the TV by his mother.

4. The amount of each employee's bonus is decided -------- the basis of his/her performance.

5. My PC needs -------- immediately, as it is almost five years old.

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