__ many times, but she still didn't know how to do it.
#79925
A
She was taught
B
Having taught
C
Having been taught
D
She has taught
推荐题目
We do not have enough money.________，we cannot afford to buy the new car.
#32754
A
However
B
Anyway
C
Therefore
D
Though
___ China’s reform（改革）and opening up in fate 1978, its quick development has aroused worldwide attention.
#34534
A
When
B
As
C
While
D
Since