5 I don't know _____ he still lives here after so many years.A.whether B where C.what D.when
问题描述：
5 I don't know _____ he still lives here after so many years.A.whether B where C.what D.when
答
a:whether.
bc和d不符合句子
我不知道这么多年后他是否还住在这里