Great effortsgrain production must be made if food shortages are to be avoided.A. to have

发布时间：2020-08-16 10:20:31


Great efforts    grain production must be made if food shortages are to be avoided.
A. to have increased
B. increased
C. to increase
D. to be increased

网友回答

A. to have increased
B. increased
(答案→)C. to increase
D. to be increased
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