He always _____(come up with) good solutions to his friend's prob_英语解答

He always _____(come up with) good solutions to his friend's problem.答案是comes up with为什么不是
coming up with,不是有一个词组是always doing

人气：472 ℃　时间：2020-04-26 15:35:53

解答

be always dong sth.
前面没有be
如果用doing,就没有动词（宾语）了