_____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.
#73673
A
Having been explained
B
The problem having been explained
C
The problem had been explained
D
Although the problem had been explained
推荐题目
He talked a lot about things and persons ________they remembered in the school.
#73847
A
which
B
that
C
whom
D
what
— Well, Jane has many advantages, too.— Oh, yes. _______ others are weak, she is strong.
#67828
A
If
B
When
C
Though
D
Where
—Do you think he will finish the job on time? —Sure. _____ he _____ to do it in his own way.
#69557
A
As soon as; will be left
B
Even if; leaves
C
Whenever; has left
D
So long as; is left
People are recycling many things which they away in the past.
#66646
A
had thrown
B
will be throwing
C
were throwing
D
would have thrown
Great changes have taken place in that school. It is no longer ___ it was 20 years ago, ___ it was so poorly equipped.
#68964
A
what, when
B
that, which
C
what, which
D
which, that