________ the difficult maths problem, I have consulted Professor Russell several times.
#88373
A
Working out
B
Worked out
C
To work out
D
Work out
推荐题目
(2013·济南一模)The quarrel ________ to the fight started from their disbelief in each other.
#89098
A
led
B
to lead
C
leading
D
has led
______to work overtime that evening, I missed a wonderful film.
#94347
A
Having been asked
B
To ask
C
Having asked
D
To be asked
The football player felt guilty because he said some really cruel things, but actually he wouldn’t stand _______their team lose.
#97189
A
seeing
B
to see
C
having seen
D
to have seen
_____ a reply, he decided to write again.
#91920
A
Not receiving
B
Receiving not
C
Not having received
D
Having not received
I remember___for the job,but I forget the exact amount.
#97397
A
to be paid
B
being paid
C
to paid
D
paying