Instruction

Select the best answer to complete the sentence.

1. If you have any questions about the project, please feel free to -------- us.

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

3. We have been conducting an -------- research for about 5 years.

4. Sales representatives are -------- to participate in the workshop to improve their sales skills.

5. Patients who are under medical treatment should be -------- for special medical benefits from the government.

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