853.Do you still remember when we went to Nanjing?
I can't remember now,but ______ sometime last summer?
A.might it be
B.could it be
C.could it have been
D.should it have been
854.My suggestion is that you _____ much meat.
A.wouldn't take
B.shall not take
C.not have
D.won't have
853.答案是C;对过去已发生情况的质疑，疑问句中常用can/could。
854.答案是C;表语从句中虚拟语气的用法。当表语从句对suggestion（建议）做说明时，从句中的动词用should+do，should可以省略。
