1 . Every child is supposed to experience hard life,  _____ makes them realize the importance of valuing the present life . （用适当的词填空）

2 . Ted came for the weekend wearing only a pair of shorts and a T-shirt, ________ is a stupid thing to do in such weather. （用适当的词填空）

3 . Meanwhile, as the construction goes on, more roads will be built and the Metro system will be expanded, ________ can reduce traffic jams. （用适当的词填空）

4 . 单句语法填空
1. After a careful examination, the police finally found the drugs ________（hide）in the walls of her house.
2. She pretended ________（listen）to the manager, but actually she was thinking about something else.
3. Belfast Zoo is home to more than 1,000 animals, many of ________ are in danger of extinction(灭绝).
4. At two years of age, some kids may only use about 30 words ________ others may be able to use 300 words.
5. The key to ________（become）more efficient is to improve the ability to set priorities(优先事项) and focus on one task at a time.
6. The injury could mean this famous basketball player ________（miss）next week’s game.
7. Since then, all Chinese retailers have been banned ________ providing free plastic shopping bags.
8. That fierce wolf had eaten most of his sheep, with only a few sheep ________ (wander) about.
9. ________ you grow rapidly through your teenage years, you will experience a lot of changes.
10. There was some ________ (confuse) as to whether our class had won or lost.

5 . 用适当的关系词填空
1. According to the history, Galileo’s ideas were well in advance of the age ___________ he lived.
2. Jennifer is always buying anything she likes, ___________ I suppose is why she is refused to get more pocket money.
3. He was then admitted to a key university, from ___________ he graduated with honors.
4. Self-driving is an area ___________ China and the rest of the world are on the same starting line.
5. ___________ is often the case with old people, my grandfather is fond of doing morning exercises.
6. The last time they went to Scotland was in May, ___________ the weather was fine.
7. Kate, ___________ sister I shared a room with when we were at college, has gone to work in Australia.
8. Many westerners ___________ come to China cook much less than in their own countries once they realize how cheap it can be to eat out.
9. That evening, ___________ I will tell you more about later, I ended up working very late.
10. Nobody knows the reason ___________ he is often late for school.