——He can write well.——He_____, but he doesn’t. He’s too lazy.
---May we go home mow ? --- No, you____. You____ to go home until 5 o’clock.
He _____in Xinxiang for five years when I heard his news.
We all should make a contribution to ______ our environment.
Neither my classmates nor my teacher_____ chess better than me.
_____ the development of the country, most people are living happily.