–How often do you wash your hair? 

There are four ________ students in our school.
A. hundred      B. hundreds     C. hundreds of 

There are __________ oranges on the table.

In English “67” is ___________.

This is our __________ Chinese lesson.

There are four ______ students in my school.

There aren’t enough chairs. Would you please _________ ones here?

If I am free, I’d like to spend _________ holiday in the countryside.

__________ travelers come to visit our city every year.

There are over ______ books of all kinds in the library.