We were having a meeting _________ suddenly someone knocked at the door.
#32482
A
because
B
when
C
as
D
while
推荐题目
English is a language shared by several diverse cultures，each of——uses it somewhat differently.
#30616
A
which
B
what
C
them
D
those
—Do you think the weather will be all right this summer? —No, ____ we are lucky. The newspaper says it’ll be very hot anyway.
#31353
A
if
B
though
C
unless
D
as
______is expected, according to the online survey, is that house prices will not go up any more.
#32203
A
As
B
It
C
Which
D
What