用所给词的适当形式填空。

1. I'm going_____(sightsee) in Italy.

2. She plans_____(have)a very relaxed vacation.

3. What should they_____(take)with them?

4. My grandfather often goes_____(fish) every Sunday.

5. Can your sister_____(speak)English?

由熟人推荐到企业工作，其优点是用人较为可靠，招聘费用也低，其缺点是（）。

A.质量不一定高，不易聘到高级人才

B.较难做到客观评价。碍于人情难以择优录取

C.只能招聘到急需用工

D.挑选面受限