The old man is used to _____ early in the morning.A.A.exercise B._英语解答

The old man is used to _____ early in the morning.
A.A.exercise
B.B.exercising
C.C.exercised
D.D.exercises

人气：145 ℃　时间：2020-04-15 02:49:19

解答

B
理由：be used to 表示习惯性动作,而习惯性一般用ing形式来表示