问题
How long do you think it will be __________ China sends a manned spaceship to the moon— Perhaps two or three years.
A:when
B:until
C:that
D:before;
B:until
C:that
D:before;
正确答案是：
同类题型
Shall we go for a during at one o’clock thisafternoon —_______Will two o’clock be OK
My brother plays ______ basketball well but he doesn’t play _______ piano well.
It is no good ______ today’s work fortomorrow
There was a lot of people standing at the door and the small girl couldn’t get .[ ]
______ without friends ______ the most difficultchallenge for Chuck while living on the island