I had no idea when and where ________.

A. it happened　　　　　　　　　　

B. does it happen　

C. it had happened　　　　　　　　

D. had it happened

29.----- Julia said she sent you a birthday card yesterday. Have you got it?

----- Oh, really ! I haven' t _______my mailbox yet.

A. examined 　　　　 B. charged 　　　　　C. tested 　　　　 D. checked

_____ that the world’s first university was established in Takshila in 700 BC.（ ）

A. It believes　　　 B. It is believed　　 C. They are believed　 D. It is believed in

He　　　 early the next morning，finding the brook(小溪) 　　　 one foot.

A.raised；raised　　　　　　　　　　　 B.rose；had raised

C.had risen；risen　　　　　　　　　　　 D.rose；had risen

John’s record was not so good as _____ on the team.
    A. all the players  B. any other player’s   C. other players       D. any player’s    

If the government had built more houses for the homeless people after the earth quake, the housing problems in some parts of the city ______ so serious now.（ ）

A. wouldn’t be　　 B. will not have been　 C. wouldn’t have been D. would have not been

—Has the little boy passed _______ P.E. test?

—He has tried twice, and the teacher will allow him to have _______ third try.

　 A．the; 不填　 B．a; the　　　 C．the; a　　　 D．the; the

He made an a _____ to see Cooper that evening.

She is still ______losing money.

—I wonder why Susan looks worried today.

—I’m not sure，but she________a small accident driving here.

A．could have 　　 B．might have

C．might have had 　D．must have had