----In recent years, problem of global warming has become very serious. ----That’s right.

发布时间：2020-08-16 11:25:00


----In recent years,     problem of global warming has bee very serious.
----That’s right. People are facing     diversity of natural disasters now.
A. /, a
B. a, the
C. the, a
D. a, a

网友回答

A. /, a
B. a, the
(答案→)C. the, a
D. a, a
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