Do you know the young man well?—Sure, we __________ friends since we met in Nanjing three years ago.

Because the old people ________ about thirty percent of the population, we should care more about them.

Great! They have shirts _________many colors. [ ]

Do you mean that he should prepare for his exam one year in advance? –Sure. Anyway,____.

There ______ a funny cartoon on CCTV 6 this evening.