问题
I don’t know ______.
A:when he will come back
B:when will he come back
C:when he comes back
D:when he does come back;
B:when will he come back
C:when he comes back
D:when he does come back;
正确答案是：
同类题型
I don’t mind lending you the money ____ you pay it back within a month.
We’ve made up our mind to finish this experiment no matter ___ difficult it was.
When is your father going to Hong Kong —He is going there July 28th.
Not until I was standing on the edge of death ____ how much I wanted to live.
Haven’t I repeated that you _____ have a holiday on Saturday if you work hard?[ ]