用括号内所给动词的适当形式填空。

小题1:Betty is often seen ______(help) the old man with his housework.

小题2:He prefers ______(take) part in the public activities rather than stay at home alone.

小题3:They ______(agree) with each other, so they argued for a long time.

小题4:Animals are our friends, so ______(protect) them is our duty.

小题5:You have ______(award) a scholarship to study violin at our School of Music.

数据库系统中，依靠________支持了数据独立性。

A．提供宿主型语言

B．模式分级，各级之间有映像机制

C．DDL语言和DML语言互相独立

D．用户之操纵UWA(用户工作区)中的数据