用所给动词的适当形式填空。

l. It's time for you ____(talk) in class.

2. His family was very poor, but he never gave up  ____(study).

3. I didn't go out until it stopped ____(rain).

4. He always practiced ____ (speak) English with others.

5. I believe that I will be able____(catch) up with others.

SQL语言具有两种使用方式，分别称为交互式SQL和( )。

A．提示式SQL

B．多用户SQL

C．嵌入式SQL

D．解释式SQL