选择正确的单词填空，写在横线上。
【小题1】—_______ (Who, What) are the children?   
—They are Bill and Rose.
【小题2】I have a sister and two________ (brothers, brother).
【小题3】How many________ (photo, photos) do you have?
【小题4】—Is that tall boy Jim?
—Yes,_______(she, he)is.
【小题5】There are seven people in your picture,________ (so, but) you have a big family.

Can help you?(  )

A．I

B．me

C．your

All my friends are very nice. I love _______.（  ）

A．they

B．them

C．him

D．her

Tell __________ about your new library, please.

A．they

B．them

C．their

—What are these? (  )
—   are toy bicycles.

A．These

B．Those

C．They