Question

we should keep in mind that our

We should keep in mind that the earth is our only home and only by saving the environment _______ourselves．（　　）

A. we can save

B. can we save

C. we must save

D. must we save

Answer 1

答案：B
分析句子结构可知，only+状语 置于分句句首，句子用部分倒装，则排除AC，must 表示“必须，一定”，can 表“能够”，故根据语境可知应选B．