______ you understand the rule, you can do it well.
#79900
A
For
B
As
C
Once
D
While
推荐题目
Mr. Smith wanted to buy the house and he told me that ____the house cost，it would be worth it.
#77531
A
however
B
how much
C
whatever
D
what
You will be successful in the interview _______ you have confidence.
#79799
A
before
B
once
C
until
D
though
—Can you describe _____ it happened? —Yes, I was riding on my bike _____ a car knocked me down from behind.
#33554
A
when; as
B
how; as
C
how; when
D
how; while
I wondered ______ they had raised so much money on their own to help youngsters in need.
#31208
A
what
B
that
C
how
D
why
________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.
#32441
A
Having explained
B
Having been explained
C
Though it was explained
D
It was explained