He observed a stranger _______ around the store at 12 p.m. last night.
#97199
A
to hang
B
hang
C
hanging
D
to be hanging
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I always regret not         harder when I was young .
#97664
A
studying
B
having studied
C
to study
D
to have studied
Do you consider it any good _____ the truck again ?
#98875
A
to repair
B
repairing
C
repaired
D
being repairing