Waste paper mustn’t _______. We should keep our environment clean.
#44420
A
throw away
B
thrown away
C
be thrown away
D
been thrown away
推荐题目
As everyone knows, rubbish _______ everywhere.
#44969
A
need be thrown
B
mustn’t be thrown
C
can’t throw
D
may throw
Some animals in the zoo die of hunger because they_____enough food.
#44660
A
don’t give
B
didn’t give
C
aren’t given
D
won’t give
Professor Virginia ______to give a lecture in our school hall yesterday.
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A
invites
B
will be invited
C
was invited
D
is invited
This kind of books _____ well and they _____ out last week.
#44810
A
sells; were sold
B
is sold; sold
C
sells; sold
D
is sold; were sold