—Who helped Mark with his English?

—_________, he taught himself.

A．Anybody          B．Nobody           C．Somebody         D．Everybody

All of us have gone out. There is ________ at home.

A．somebody         B．nobody           C．everybody         D．anybody

He thinks himself somebody, but we think him ______.

A．nobody           B．anybody          C．somebody         D．everybody

They were all very tired, but ______ took a rest.

A．everybody        B．somebody         C．anybody          D．nobody