英语高手请进!需要帮助!
Hedidn'tgotosleep______hefinishedhishomework.A.soB.beforeC.afterD.until是选B还是D??请解释一下啊...
He didn't go to sleep ______ he finished his homework.
A.so B.before C.after D.until
是选B还是D??
请解释一下啊!!! 展开
A.so B.before C.after D.until
是选B还是D??
请解释一下啊!!! 展开
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