MygrandfatherusedtobuildrailwaysfortheJapanesearmywhenh...

問題詳情：

My grandfather used to build railways for the Japanese army when he was young. He was 　　　 to work hard from morning till night.

       A. invited                  B. encouraged    

       C. allowed                D. forced

【回答】

D

知識點：動詞語態

題型：選擇題