Some physics problems in this book are _________difficult for the students _________work out.
#55219
A
so; that
B
not; but
C
such; that
D
too; to
推荐题目
It’s best to travel with someone who can translate things for you ________ you speak French yourself.
#56933
A
if
B
until
C
unless
D
when
—I feel stressed from time to time. Could you give me some advice?—________ sharing your worries with your parents?
#55305
A
How about
B
Why don’t you
C
Why not
D
Would you like
Go to the Olympic Center by underground instead, ______ you’ll be late for the match.
#56555
A
and
B
unless
C
but
D
or
