Tom hid himself behind the door, _________ he could hear the steps of his mother clearly.

Hearing the sound, the animal disappeared into the bushes, ___ Mrs. Stone picked up her bag and ran all the way home.

Lin Dan has become the best badminton player,       he wanted to be.

The famous scientist, ____ a dinner party will be held tonight, is to arrive soon.

－Sunday is a public holiday, ___ children should get close to nature.
－But most of them have several lessons to attend.

She is the only one of the students who ____ praised by the teacher. 

They talked for about an hour of things and persons _____ they remembered in the school. 

He is a lazy man      nobody wants to work with     .

It’s such a good place ______ everyone wants to go and visit _______ it is well-known all over the world.

It' s a pity that there are many teenagers _____only on-line activity is chatting with their e -pals !