In this school, ______ students work very hard, ______ they are very happy.
#57207
A
although, /
B
although, but
C
/, although
D
but, although
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  ________ he fails the job interview ?
#56247
A
When
B
What if
C
Why
D
What about
It’s dangerous______a tree.
#58020
A
climbing,
B
going up
C
to climb
D
clim