Did you have a difficult time_____ how to learn English well A.kn_英语解答

Did you have a difficult time_____ how to learn English well A.know B.to know C.knowing D.to knowin
最好写上理由

人气：172 ℃　时间：2020-02-01 08:58:23

解答

c
have a + adj.+ time + doing 固定句型,“有一段...时间在干...”