He does not know how to do (it)还是what to do (it) 还带括号吗_英语解答

He does not know how to do (it)还是what to do (it) 还带括号吗

人气：403 ℃　时间：2020-06-03 04:21:07

解答

前者可要可不要it,后者不能要it.因为do已经有宾语what了.