Mother was busy washing dishes ________________ Father was watching TV．
#30098
A
until
B
if
C
since
D
while
推荐题目
Why not stay at home ______ the road is so slippery after the heavy snow?
#31389
A
so long as
B
in case
C
so far as
D
now that
It’s going to be some time _____ he sees his father again, _____ business has just been started in Switzerland．
#32577
A
after; who
B
before; whose
C
when; whose
D
since; who
You should be careful of such a person flatters you in your presence and speaks ill of you in behind.
#33297
A
who
B
that
C
as
D
which
We were told that we should follow the main road ___ we reached the central railway station.
#34535
A
whenever
B
until
C
while
D
wherever