________ 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
________ help the people in the snowstorm in the South made him worried.
#96455
A
Not known how to
B
Unknown what to do to
C
His knowing not how to
D
His not knowing how to
— What made you so upset? — ______ the exam.
#97733
A
Failing to pass
B
To fail passing
C
Failing passing
D
To fail to pass
____ that they are inexperienced, they have done a good job.
#98166
A
Giving
B
To give
C
Given
D
If given
At the age of 29, Dave was a worker, _____ in a small apartment near Boston and ______ what to do about his future.
#98919
A
living; wondering
B
lived; wondering
C
lived; wondered
D
living; wondered