Look!  ______ ducks are coming  here.
#51348
A
Hundred of
B
Hundreds of
C
Three hundreds
D
Three hundreds of
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 There are  _______students in my school.
#51464
A
three hundreds
B
three hundred
C
three hundred of
D
three hundreds of
------ How many people were invited to the meeting? ------About six ________. 
#51497
A
hundred
B
hundreds
C
hundred of
D
hundreds of
_________of people will visit Beihai .
#51811
A
Thousand
B
Thousands
C
Thousands of
D
Thousand of