问题补充:
---Do you know when Dr Smithfor dinner this evening?
----No,but I think he when he is free.
A. will come;comes
B. will come;will come
C. comes;comes
D. comes;will come
答案:
A. will come;comes
(答案→)B. will come;will come
C. comes;comes
D. comes;will come
解析:句意:你知道史密斯博士今晚什么时候来吃晚饭吗?——不知道,但是我想如果他有空他会来的。结合语境可知本题上下文都是宾语从句,描述的是将来某时发生的动作,故都用一般将来时态,选B。