A lot of trees ______ on the hill yesterday.
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A
are planted
B
will be planted
C
have been planted
D
were planted
推荐题目
What’s the language                  in Canada?
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A
speaking
B
spoken
C
is spoken
D
to speak
Students ________________slippers(拖鞋) when they are at school.
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A
don’t allow to wear
B
don’t allow to put on
C
are not allowed to wear
D
are not allowed to put on