He usually ______ to school by bus, but he ______ to school yesterday. （ ）

A．goes, walked

B．go, walked

C．goes, walks

写出下列动词的过去式形式。
1.  visit _______ 2. clean_______ 3. help _______ 4. watch _______
5.  go _______ 6. do_______ 7. have _______    8. see _______
9.  eat _______ 10.want_______

There _______ three books on the desk one hour ago. (    )

A．was

B．were

C．are

按要求完成句子。
【小题1】Everyone _________ (study) hard every day!
【小题2】Our teacher _________ (learn) us to play ping-pong yesterday.
【小题3】Danny couldn’t _________ (throw) the ball.
【小题4】My father _________ (answer) me some questions now.
【小题5】Did he _________ ( watch)a basketball this morning?

—What _____ you _______ last week?
—I bought a bag.

A．did, buy

B．did, bought

C．do, buy