（ ）3. We back last month.

A.come B.came C.comes

（ ）4. We are back China.

A.for B.on C.from

（ ）5. We ice creams yesterday.

A.buy B.bought C.buyed

（ ）6. They went to school bike.

A.on B.of C.by

（ ）7. It's me.

A.to B.for C.at

（ ）8. Here's a postcard Lingling.

A.from B.in C.with

（ ）9. I will send you email.

A.at B.a C.an

（ ）10.- Did Lingling go to the park yesterday?.

-

A.Yes, she did B.No,she did C.Yes, I did

四、用所给词的适当形式填空。（15分）