she discovered that the old man was__hearing.A hard at B hard wit_英语解答

she discovered that the old man was__hearing.
A hard at B hard with C hard of D hard in
选哪一个为什么?

人气：410 ℃　时间：2019-10-03 06:34:56

解答

hard at 致力于
hard with 为难
hard in 在某方面困难
hard of 难以
hard of hearing
重听的; 耳聋的
C为什么不选hard in，表示在听力方面很困难。hard of hearing 耳聋hard in hearing 只是听起来吃力还是能听清意思不一样的