There are about _________ teachers and students in their school.
#51545
A
three thousands
B
three thousand
C
thousand of
D
three thousand of
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There're            students in Grade7. 
#51655
A
three hundreds
B
three hundreds of
C
three hundreds'
D
hundreds of
Our new physics teacher got a pretty and lovely girl _____   . 
#51414
A
in his thirty
B
in his thirty’s
C
in his thirtieth
D
in his thirties
It’s        educational book. I want to read it      second time.
#51443
A
a quite, a
B
a very, the
C
quite an, a
D
quite an, the