Helen always helps her mother do the housework even though going to school ________ most of her day. 
#13042
A
takes up
B
makes up
C
saves up
D
uses up
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There are ______ students in the school . But I don’t know _______ the girls among them .
#14138
A
a number of , a number of
B
the number of , the number of
C
a number of . the number of
D
the number of , a number of
If the time is    ________    exactly, the paper can be finished on time.
#11124
A
made out
B
figured out
C
carried out
D
put out