According to my grandma, it is a good idea to eat chicken soup when you have a cold.— ________, scientists agree with her.

The telephone rang when wedinner.

The boy is sitting ______. the running car. Suddenly he saw a dog is standing ______thecare on the road.[ ]

Mr Hu, can you tell us how to learn math well?—Sure. But remember nothing can be learned _______ hard work. [ ]

__________ does it take you to go by bus from Tianjin to Beijing?-About five hours.[ ]