25．If water becomes increasingly scarce in decades，water shortage will become a hot issue

发布时间：2020-08-16 06:46:07


25．If water bees increasingly scarce in decades    ，water shortage will bee a hot issue all over the world．
A. ing
B. having e
C. to e
D. to be ing

网友回答

A. ing
B. having e
(答案→)C. to e
D. to be ing
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