Greater efforts to increase agricultural production must be made if food shortag

游客2023-11-05 56

问题 Greater efforts to increase agricultural production must be made if food shortage ______ avoided.

选项 A、is to be
B、can be
C、will be
D、has been

答案 A

解析时态题。if从句中的动作还没有发生，只是提出目标。be to do sth．可表示按照计划、约定将要发生的动作，故A正确。will do sth．暗含有主观意愿之意，不符题意。

转载请注明原文地址:http://tihaiku.com/zcyy/3159595.html

相关试题推荐

随机试题

最新回复(0)

______withlastyear,theoutputofthefactorythisyearhasincreasedbytwen