About two _________boys took part in the running race. 
#51585
A
hundred
B
hundreds
C
hundreds of
D
hundred of
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There are quite a few trees in the forest .
#51490
A
kind of
B
a lot of
C
not too many
D
not enough
—Is Mary         ? —No, she is a          girl.
#51392
A
twelve years old; fourteen years old.
B
twelve years old; fourteen -year -old.
C
twelve - year - old; fourteen years old.
D
twelve - year - old; fourteen - year -old.
Five ________ dollars is_________ money.
#50935
A
million, a lot of
B
millions, a lot of
C
million of, much
D
millions of, many.
There are about 46 ______ people in this country.
#51775
A
million
B
millions
C
million of
D
millions of