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. Please take care of these -------- orphaned children.

3. The five companies from Europe and the United States -------- for 80% of the sales.

4. t is very important to ----------- the trend accurately.

5. When the contract runs out, it won't be --------.

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