Thetwins,who      theirhomework,wereallowedtoplaybadmi...

問題詳情：

 The twins, who       their homework, were allowed to play badminton on the playground.

A. will finish                        B. finish                              C. have finished                 D. had finished

【回答】

D

知識點：動詞時態與語態

題型：選擇題