________ many times, he finally understood it.
#94974
A
Told
B
Telling
C
Having told
D
Been told
推荐题目
—What did you do when you saw the girl     in the flood? —I did what I could     .
#96030
A
struggling; to pull her up
B
struggle; pull her up
C
struggling ; to pull up her
D
struggle;pull up her
_________ into a famous university made his parents very happy.
#96342
A
Tom was admitted
B
Tom be admitted
C
If Tom was admitted
D
Tom’s being admitted
I prefer taking exercise in my spare time __ healthy.
#93544
A
to keep
B
to keeping
C
rather than keeping
D
rather than keep
 I really don’t know ____ .
#97498
A
to swim
B
how to swim
C
to swim how
D
how swim