I regret _____ that I am unable to help you.             
#95900
A
saying
B
say
C
to say
D
said
推荐题目
Glass milk bottles can be used again and again, but they need __________ thoroughly, ____they?
#97943
A
to clean, needn’t
B
cleaning,don’t
C
clean, aren’t
D
cleaned, can’t
—Would you mind my _______ your speech? —Not at all. Go ahead. 
#92137
A
record
B
to record
C
recording
D
of recording