Don’t handle the vase as if it ______ made of steel.

 As a result of destroying the forests, large ____ of desert ____ covered the land.

 —Is this your family?—Yes, it is. These are my parents and those　_____　my brothers. 

None of us _____ running, but we all like swimming.

Either you or one of your students __________ to attend the meeting that is due tomorrow.