________ astronauts cannot go to a baseball game or a movie in orbit , there are many familiar activities that they can still enjoy.
#31046
A
While
B
Since
C
Before
D
Unless
推荐题目
That’s all for the introduction to your arrangements these days. So now ______ there are any questions, I’d like to go ahead and start the first video.
#31607
A
if
B
unless
C
until
D
though
It was for a lifetime of unselfish work among the sick natives ______ the old doctor deserved to be honored.
#33380
A
who
B
that
C
which
D
whom
Remember when you learned to water ski, David? _________ you skied more, you got better and better. It’s the same with language study.
#32540
A
although
B
while
C
as
D
unless
________ you have a large vocabulary, you will find it easy to read.
#32458
A
Once
B
Before
C
Unless
D
Even though