I usually sleep with the window open _____ it’s very cold.
#58323
A
until
B
unless
C
when
D
if
推荐题目
____ it snowed heavily yesterday, nobody in our class missed the lesson.
#58529
A
Though
B
Because
C
Unless
D
Since
______ Kathy was watching TV, her mother asked her to go shopping.
#56706
A
Before
B
Until
C
While
D
After
