These ___ my jeans. (   )

A．is

B．am

C．are

They _________old then. (   )

A．wasn’t

B．weren’t

C．don’t

根据提示，完成句子或对话。
【小题1】______ and ______ is ______. (11+28=39)
【小题2】—______ (What, What’s) two and three?
—______ (It’s/ They’re) five.
【小题3】—What ______ (is, are) ten and eleven?
— ______ ______.
【小题4】are, thirty-one, in, school, classrooms, there, the (.) (连词成句)
____________________________________________________
【小题5】twenty-three, eleven, is, and, twelve (.) (连词成句)
____________________________________________________

There ________ flowers.  （   ）

A．is

B．are

C．an

Where    your mother yesterday?

A．was

B．had

C．were