用括号内所给单词的适当形式填空。

1. Have you ever _____ (meet) her?

2. What do you want _____ (do)?        

3. Project Hope _____ (build) many schools all over China since 1989.

4. His little brother enjoys _____ (play) football after school.

5. It's easier _____ (learn) a foreign language when you visit a foreign country.

检验报告的核心内容是（）。

A、页码的编号及结束的标识

B、检验结论准确

C、样品接收日期

D、实验日期