Half of the class ________ done most of the work. The left ________rather hard.

When I was in primary school, I was told that the earth ______around the sun.

—How much are the two pairs of shoes?  —They are not expensive. I think fifty dollars ______ enough.

 Professor Smith, along with his assistants,______ on the project day and night to meet the deadline.

You can _____ this cake _____ten pieces. There are ten persons in this room.