—What the number of the students in your class ?
—About 60 . A number of them girls .
A:is ; is
B:are ;are
C:is ; are
D:are ; is
I think we____(应受)a rest after all that hard work.
填一填。
5厘米=____毫米 90厘米=____分米
10分米=____米 8分米=____厘米