The young man stopped and looked back as if ______ whether he was being followed.
#95381
A
seeing
B
to have seen
C
having seen
D
to see
推荐题目
On ________ our flight would be delayed, we made some other arrangements.
#95933
A
being informed
B
informed
C
informing
D
having informed
We had an anxious couple of weeks _____ for the results of the experiment.
#97903
A
wait
B
to be waiting
C
waited
D
waiting
Desserts made from apples, such as pies, apple pancakes and apples _____ in sugar are available for sampling.
#91720
A
dipping
B
dip
C
dipped
D
to dip
There are some students ______ to have known what they don’t really know, which is really harmful to them.
#94235
A
pretending
B
to pretend
C
pretended
D
pretend
____ by high mountains, the city is infamous for air pollution.
#90478
A
Surrounding
B
To be surrounded
C
Surrounded
D
Having surrounded