-Tom must have been in his girlfriend’s house on Christmas Eve ?--He was seeing

问题补充：

---- Tom must have been in his girlfriend’s house on Christmas Eve, ?

----- ．He was seeing a film all night long with us ．

A. mustn’t he；Yes ;

B. wasn’t he， No ;

C. hasn’t he；Yes;

D. didn’t he；No;

答案：

A. mustn’t he；Yes ;

(答案→)B. wasn’t he， No ;

C. hasn’t he；Yes;

D. didn’t he；No;

解析：考查must+have done形式的反意问句，这种反意问句要看句子有没有过去时间，有的话就用过去时，没有就用现在完成时，这句话的时间是on Christmas Eve，所以用wasn’t he？第二空是回答，根据答语：他一个晚上都和我们一起看电影的。所以是No。选B。