Great efforts to increase agricultural production must be made if food shortage________avoided.
问题描述:
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
答
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