Our civilization cannot be thought of as____in a short period of time.
A.
to have been created
B.
to be created
C.
having been created
D.
being created
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【简答题】用括号内所给单词的适当形式填空。 1.It is said swimming in this river is very _________(er). 2.We can do the work with _________(little) money and fewer people than they can. 3.Many people made a _________(decide)...