题目内容

A series of books __ been sent to the school.

A. has
B. have

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A variety of boxes ___ to fall down.

A. is
B. are

The poor （is / are）very happy, but the rich （is / are）sad.

A. is,is
B. are,are
C. is,are
D. are,is

The beautiful ________（live / lives）forever.

A. live
B. lives

Bothof us __ leaving.

A. are
B. is