—Are these your sheep ?—No. Mine _____ on grass at the foot of the hill.

 There        a desk and some chairs in my room. The desk is very nice.

The traffic is moving very slowly as so many cars   on their way back to Shanghai.

The teacher，with 6 girls and 8 boys of her class，_____ visiting a museum when the earthquake struck.

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