Instruction

Select the best answer to complete the sentence.

1. Bill -------- his mother for four years when she died of a lung cancer at the age of 65.

2. One of the engineers says there is a -------- of maintaining the system.

3. Sopia was so smart as to solve the problem with --------.

4. It won’t be long -------- the Chinese economy overtakes the Japanese economy.

5. You -------- have taken her advice.

Your score is

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