______ when to leave, I could only stay at home, _____ nothing. 
#97220
A
Knowing not; done
B
Not knowing; doing
C
Having not known; done
D
Not having known; doing
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The class __________ 80 students is hard to manage.
#93034
A
making up of
B
consists of
C
consisting of
D
made up
______ Chief Engineer, as his family had expected, made his father happy and proud.
#95916
A
Mike being appointed
B
Mike’s appointed
C
Mike appointing
D
Mike’s being appointed