I usually sleep with the window open _____ it’s very cold.
#58323
A
until
B
unless
C
when
D
if
推荐题目
___________ the young girl ___________ her parents take regular exercise in order to keep fit.
#56037
A
Not ... but
B
Either ... or
C
Neither ... nor
D
Not only ... but also
— Can you tell me ______ it is from here to the Summer Palace?— Let me see. It's about 15 minutes' ride.
#57747
A
how long
B
how soon
C
how much
D
how far
