Great efforts to increase agricultural production must be made if food shortage________avoided.A,is to beB,can beC.will beD.has been

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/27 14:30:53

Great 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

这句话的意思是说:如果想避免食物囤积就要努力在农业增产上下功夫
be to do 有表示将来的意思