941.The careless driver is ________ for the traffic accident that _______ yesterday.

A.to blame;happened

B.to blame;was happened

C.to be blamed;was happened

D.to be blamed;happened

942.Would you have called her up had it been possible?

Yes,but I _______ busy doing my homework.

A.was

B.am

C.had been

D.would be

941.答案是A;

be to blame应受责备。注意:此短语无被动。

942.答案是A;

考查动词的时态在具体语境中的应用。此处but之后为过去的真实情况，所以应选用过去时。