We all hope you            hard every day.
#41549
A
to study
B
study
C
studies
D
studying
推荐题目
The world _____ . Things never stay the same.
#38620
A
changes
B
is changing
C
was changing
D
will change
-Why does the river smell terrible? -Because the water_______.
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A
was polluted
B
has been polluted
C
will be polluted
D
has polluted