_____ many times, he finally understood it. 
#94484
A
Told
B
Telling
C
Having told
D
Having been told
推荐题目
Written in a hurry, ______. How can it be satisfactory?
#90721
A
they find many mistakes in the report
B
lots of mistakes have been made in the report
C
there are many mistakes in the report
D
the report is full of mistakes
__________ the experiment right, I tried again and succeeded.
#94783
A
Not having done
B
Having not done
C
Not doing
D
Not done