You should not go rafting ________ you know how to swim.
#31441
A
if
B
if not
C
when
D
unless
推荐题目
The boy was so tired that he fell asleep _______ his mother could take off his clothes.
#30840
A
before
B
after
C
while
D
when
_______he is good at playing basketball, he failed to join the school basketball team yesterday.
#31775
A
Since
B
Unless
C
Though
D
Because
I’d love to stay in the community I grew up, but ambition can drive me to the city to be “ the big companies are”.
#31508
A
that; where
B
where; that
C
in which; which
D
where; where
The last time we had great fun was ________ we were visiting the Water Park.
#30460
A
where
B
how
C
when
D
why