1Getting (足够的) sleep helps us to maintain health and reduce stress.
2The future economic (趋势) of the world is getting too hard to predict.
3China is trying to (加速) the development of its central and western regions.
4The factory met its production (目标) two months ahead of time.
5Your plan is good in (理论),but it remains to be tested in practice.
6The new English (课程) stresses the ability of using English.
7The only way to attract customers is to (保证) the quality of the products.
8Young trees usually take about a (十年) to reach a height of ten meters.
9Before you leave the meeting room, (确保) that all the windows are closed.
10It takes hard work to (达到) the great goal of being an Olympic champion.