高等继续教育 / 大学英语II
正确率：100%
题型描述: 单选题
Greater efforts to increase agricultural production must be made if food shortage ＿＿＿＿＿＿ avoided.
A.is to be
B.can be
C.will be
D.has been
Greater efforts to increase agricultural production must be made if food shortage ＿＿＿＿＿＿ avoided.
A.is to be
B.can be
C.will be
D.has been
参考答案：
佳题速递：