阅读下面短文，按照句子结构的语法结构和上下文连贯的要求，在空白处填入适当的词或用括号中所给词的正确形式填空，每空不超过两个词。

In Great Britain, there are rules to make the roads safe, but some people do not obey the rules. They are 1.(care). 2. everyone obeys the rules, the roads will be much safer.3. shall we do then?

Remember this rule: In Britain, traffic keeps to4. left. Cars, buses and bikes must all keep to the left side of the road. In most other5.(country), traffic keeps to the right.

6. you go across the road, stop and look both ways. Look right, look left, and look right again. If you 7.(be) sure that the road is empty, it is time8.(go) across the road. If you see small children or very old people, please wait.9. is polite to help them.

We must teach young children to cross the road 10.(safe). We must always give them a good example. Small children must not play on the road.

They develop their skills _________ they can do things better and better.

A. however B. because C. since D. so that

Miss Gao asked a question，but it was ______ that nobody could answer it．

A. very difficult B. too difficult

C. difficult enough D. so difficult

She bought a digital camera online ____________ she would save a lot of time.

A. so that B. as soon as C. no matter D. such that

—The boy can speak both English and Japanese ____ he is only ten.

—Wow, what a clever boy!

A. if B. because C. although D. so

---Sally, I’m going to Shanghai tomorrow.

---_____.

A. Well done B. With pleasure

C. Have a good trip D. Not at all

—I went to the park yesterday. —_____. But I didn’t see you.

A. So do I B. So did I C. Neither did I D. Neither I did

We won’t leave here until it ___ raining.

A. stopped B. stop C. stops D. will stop

My parents will go to Shanghai _____ next week.

A. on business B. in business C. for business D. with business

I ____ you as soon as I get to Beijing.

A. call B. called C. will call D. am calling