—How many students are there in your school?

—_______ students, I think.

A. Thousand of????????????? B. Three thousands

C.Three thousand? D. Three thousands of

—How many students are there in your school?
—_______ students, I think.
A. Thousand of      B. Three thousands   C. Three thousand

— How many students are there in your school?

—______ students, I think.

A. Thousand of B. Two thousands C. Two thousandD.Two thousands of