If their marketing plans succeed, they _____their sales by 20 percent. [ ]

I hear ________ students went to the hall to have the concert.

Some organizations have been__________ to help thepoor students in the western areas of China.

Your uncle speaks English very fluently.—Sure. He ______ his education in London for three years when he was a teacher ten years ago.

Shall I go and get you something to eat——______________