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

题目简介

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

题目详情


Great efforts___________grain production must be made if food shortages are to be avoided.
A.to have increasedB.increased
C.to increaseD.to be increased
题型:单选题难度:偏易来源:不详

答案

C

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