Mountain climbing ________ be very tiring, and many people feel sick ________ the atmosphere gets thinner.
#31554
A
may; while
B
can; as
C
must; though
D
should; for
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________ I heard the song by Taylor Swift, I was kept in its power.
#31521
A
First time
B
For the first time
C
The first time
D
At the first time
We shouldn’t drink _______ we drive and we mustn’t drive if we’ve drunk.
#75969
A
unless
B
before
C
until
D
while
________ I saw the beautifuldecorated house, I really wondered how she could manage that all by herself.
#30293
A
While
B
When
C
As long as
D
Now that
．How long is it ______ we last spent the holiday in the country together?
#34786
A
until
B
before
C
since
D
that
I have no idea ______ measures the government will take to stop the air from being further polluted.
#30177
A
which
B
what
C
that
D
whose