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
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When young, work with every fiber of your being and when old, you’ll have little left _____ about.
#90881
A
to complain
B
complaining
C
having complained
D
to have complained
I would sooner ________ the chance, which is not easily taken, than ________ my friend.
#94707
A
not to take; to hurt
B
not taking; hurting
C
not take; hurt
D
don’t take; to hurt
The flu is believed ______ by viruses that like to reproduce in the cells inside the human nose and throat.
#90948
A
to be caused
B
to have caused
C
being caused
D
causing
____________, I’d like to say how much I’ve enjoyed staying in your beautiful country.
#91565
A
To include
B
As conclusion
C
To conclude
D
In the conclusion
This means going back to the place where we left the family ____ in a tree the night before.
#95992
A
to sleep
B
to be sleeping
C
slept
D
sleeping