1 . 正因为大量健身步道的投入使用，越来越多的上海市民开始了定期户外锻炼，“每天一万步”一成为都市新风尚。(It)

2 . 正是老一辈人的艰苦奋斗使祖国发生了巨大变化，未来掌握在我们年轻人手中，我们决不辜负期望。(lie)

3 . 这家公司正是因为不重视产品更新换代，忽视售后服务，才逐步被市场淘汰的。（It was because...）

4 . 直到获悉儿子被心仪的私立小学录取时，这个多愁善感的妈妈才松了一口气。 (It …)

5 . Was it________Jack came late for school that Mr. Smith got angry?

6 . John's success has nothing to do with good luck. It's years of hard work ________ has made him what he is today.

A．which

B．that

C．what

D．\

8 . It was 80 years before Christopher Columbus crossed the Atlantic ________Zheng sailed to East Africa

A．when

B．that

C．after

D．since

9 . It’s unnecessary and it’s not important at all. We needn’t care about it. It is one’s inner beauty________matters. (用适当的单词填空)

10 . —What do you think it is________has brought worldwide attention to China? (用适当的单词填空)
—Rapid and steady economic growth, of course.