20．The actress looks very young but _______she is more than forty yearsold.

Sorry，I have to ______ now. It’s time for class.—OK，I’ll call back later.

Whose are these school uniforms— They _____ belong to a student from Yucai Middle School. The school name is on the clothes.

The football match _______ the students competed yesterday was very wonderful.

It is I who ____ going to attend themeetingtomorrow