More than 100 students have entered for the competition and        gains the most points will be the winner

This kind of cell phone is very common and I also have ______.

The two runners are neck and neck; _______ of them could win the race.

 Many students are playing sports on the playground.______ are playing soccer; ______are running and jumping.

As teachers, we feel         our duty to teach our children to be good wherever we are.