Qinghai-Tibet Railway(青藏铁路) was completed last year. It is the __________ railway that connects Tibet with the other parts of China.
Sandy doesn't know how to make a plan. You can give her some______.
Mum, I'm feeling even _______ than yesterday.
—How often do you clean your room?— .
A dog is useful animal.
Could you tell me a meeting in Guangzhou next week?