.He suddenly saw what looked like a snake in the darkness. For an instant his heart seemed to stop ______.
#97023
A
to beat
B
beating
C
beaten
D
being beaten
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To succeed in a difficult task ,______________.
#97643
A
Persistence is needed
B
Persistence is what you need
C
One needs to be persistent
D
A persistent nature is needed
I wonder how long it will take you_____ such a hard task within so little time.
#97583
A
complete
B
to complete
C
completing
D
completed