________andthehousingproblemsforlow­incomefamiliesinthi...

问题详情：

________ and the housing problems for low­income families in this area could be settled.

A．If we double our efforts

B．Unless we make every effort

C．Make more efforts

D．Making greater efforts

【回答】

C　

知识点：祈使句 感叹句

题型：选择题