He has donated some money to those who________ in poverty, which   of great help.

Three quarters of some children’s spare time　　　　 wasted watching TV －that can explain why they are lazy.

He is the only one of the students who ______a winner of a scholarship        for three years.                                                         

Not only my friend but also I ______ interested in action films. We often see films together.

There ________ many changes to Beijing over the past years.