Onlywhenthewarwasoverin1918

问题详情：

Only when the war was over in 1918________get happily back to work.

A．did he able to                  B．was he able to

C．he was able to                  D．he did able to

【回答】

B　only修饰时间状语从句，位于句首，主句要用部分倒装，排除C、D两项；be able to能，会；排除A项。故选B。

知识点：倒装与省略

题型：选择题