问题

You shouldn’t talk until ________ to.
A:asking
B:having asked
C:to ask
D:asked
B:having asked
C:to ask
D:asked
正确答案是:
同类题型
The food in this restaurant is very nice. ______, the price is not high.
_______ the road round to the right andyou’ll find his house
He will send me a message as soon as he_________ in London.
He is such a fantastic student that he has been __________monitor.
Nobody is allowed to go through the between China and Russia without a passport.