问题

Only when _____ to explain ____ the reason for this. [ ]
A: did he start; she realized
B: he started; did she realize
C: did he start; she had realized
D: he started; had she realized
B: he started; did she realize
C: did he start; she had realized
D: he started; had she realized
正确答案是:
同类题型
I hear that Tom can’t afford his schoolingthis fall.— _____, let’s do something for him.
We ___ our new neighbors yet, so we don’t know their names
.Some students often listen to music___classes to refresh themselves
I don’t think ________is possible for us to get a taxi at this time of day.
Tom, what do you think of the school— Oh, no other school is _______ in the city. It’s ______ one.