Students are asked to _____ themselves in this boarding school and they are only allowed to go back home once a week. 
#78101
A
act
B
behave
C
perform
D
observe
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Go back home now, Mary. Your parents ______ your safety.
#63864
A
are concerned about
B
are concerned with
C
are concerned on
D
concern of
--What shall we do with our project, stop or continue, sir?  ---________ and try to finish it _______. 
#67487
A
Go ahead with it; ahead of time
B
Go on doing it; before time
C
Go on to do it; ahead of time
D
Continue to do it; before the time