________ 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
How foolish I was! _______ you have realised that, stop blaming yourself.
#30751
A
Now that
B
Unless
C
Although
D
Even if
Some people believe _______ has happened before or is happening now will repeat itself in the future.
#30012
A
whatever
B
whenever.
C
whereever
D
however
After the wedding ceremony, all the guests attended a reception, _______ lasted through the night.
#32466
A
that
B
when
C
where
D
which
_______ I’m not sure of winning the match, I will have a try anyway.
#31229
A
While
B
Before
C
Once
D
Since