—Robert is indeed a wise man.—Oh, yes.  How I have regretted ____ __his advice?
#95763
A
to take
B
taking
C
not to take
D
not taking
推荐题目
Many things _____ impossible in the past are common today. 
#98285
A
considered
B
to consider
C
considering
D
being considered
He pretended _______ me when we met in the street.
#92570
A
not to know
B
not to be knowing
C
not having known
D
not knowing