It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
#30830
A
since
B
before
C
after
D
when
推荐题目
You had better book rooms at the hotel in advance you should find no room on your arrival.
#31001
A
so that
B
even if
C
in case
D
now that
----How soon will you send the book to me? ----It will be two days _______ you receive my book.
#33944
A
before
B
that
C
since
D
when
--Could you please cut the price a little? --Er... _________ you buy more than ten.
#33244
A
even if
B
so long as
C
in case
D
as soon as
