As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.
#31875
A
before
B
unless
C
since
D
until
推荐题目
— You look pale. Did you sleep well？— No. It was already midnight ____ I finished my homework.
#31322
A
before
B
when
C
that
D
since
The time is not far away _______ the information will be made known ______ more workers will be trained for their jobs．
#32738
A
until; which
B
when; that
C
before; that
D
as; which
The prize will go to the writer______ story shows the most imagination.
#32086
A
that
B
which
C
whose
D
what