________ 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
(2013·兰州模拟)Living in the eastern part of the city has its problems, shopping is not the least.
#30596
A
with which
B
of which
C
for which
D
which
It is still under discussion ________the old bus station should be replaced with a modern hotel or not.(2011·重庆)
#29980
A
whether
B
when
C
which
D
where
The woman rushed out ________ she felt the house shaking.
#30291
A
until
B
immediately
C
unless
D
before
It will be another 50 years ______ our country is expected to reach the level of a medium developed country.
#30277
A
since
B
before
C
that
D
when
To improne the pmlity of our products we uaked for nuggratior a had used the producu.
#34749
A
whacver
B
who
C
whichever
D
which