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When he fell off the bike, he tried ____ but couldn't .
#81031
A
to have stood up
B
standing up
C
to stand up
D
having stood up
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My mother always tells me ______ out alone at night.
#66303
A
go
B
not go
C
not to go
D
don’t go
Don’t all stand up together! ________, please.
#71306
A
Each at one time
B
One at a time
C
One by one time
D
One for each time
Criticized as online games are, they never fail to ______ a large number of teenagers．
#73041
A
appeal to
B
object to
C
refer to
D
turn to
He stayed up too late every night,______ to catch up with his classmates.
#69748
A
Having determined
B
being determined
C
determined
D
to determine
    Mother kept me _____ during the summer holiday, for I failed my maths exam.
#68972
A
study
B
studying
C
to study
D
studied