We ________ with the baby on the Great Wall.（   ）

A．playing

B．be playing

C．played

用所给单词的适当形式填空。
【小题1】In the classroom, we should be_____________（quietly).
【小题2】Helen is_____________ . She dances _____________.(happy)
【小题3】The mouse_____________（bite)the door yesterday.
【小题4】—Would you like_____________（eat)some mushrooms? —Yes, please.
【小题5】The lion_____________（get)out from the net at last.
【小题6】You shouldn't_____________（catch)the birds. They are our friends.
【小题7】The dog and the cat_____________（become)good friends from then on.
【小题8】The boy_____________ (say), "I will go to the park." Then he got on the bus.
【小题9】The girl is_____________（dance)beautifully.

What did you do ___ weekend? (   )

A．next

B．last

C．this

He is a taikonaut.（改成一般过去时）
________________________________________

Mary _________wtite a good story last year. (   )

A．couldn’t

B．should

C．can