There are about        students in our school.

              A. four thousand                                      B. four thousands of

              C. four thousand of                               D. thousand of

 There are about ______________students in our school.  

 A. four thousand  B. four thousands of  C. four thousand of  D. thousand of 

There are about ____________ students in our school.

A．four thousand      B．four thousands of   C．four thousand of    D．thousand of

—There are two _________students in our school.

—Yes, and about four_______ the students are league members.

A.thousand; hundred of B. thousand; hundreds of

C. thousands; hundreds of 　　　　　　　　D. thousands; hundreds