Being a parent is not always easy, and being the parent of a child with special needs often carries with ______ extra stress.

　 A. it　　　 B. them　　　 C. one　　 D. him

The doctor recommended that you 　　 swim after eating a large meal.

A. wouldn’t　 　　 B. couldn’t 　　　　C. needn’t 　　　　D. shouldn’t

-----They used to be good friends, but now they are like strangers. ----- How _____ this ______?

　 A. were; come about 　 B. did; come about

　 C. were; taken place 　 D. were; happened

21.  —You haven’t done it well enough.
—But I tried my best and did it in the way ________I think is the most convenient.
A．in which　 　 B．where　 　　　　　 C．by which　 　 D．that

Mary is the only one of the girls that ____ able to win the competition.

A. was 　　　　　　 B. are 　　　　　 C. is　　 　 　 D. were

Does the way you thought of _______ the water clean make any sense?

A. making　　　　　　　　　 B. to make

C. how to make　　　　　　　 D. having made

Although he likes the job, he can't guarantee ________ for more than a year.

A．working B．work C．to work D．to be working

I have learnt a lot about Chinese life while teaching in Nanjing, China. When I first came to China, there were many things I did not understand. Now, I have a better 　1　 of Chinese culture and find it very interesting.

Bargaining is a funny Chinese custom that I have tried to learn. In the USA, prices are set and you cannot ask for a 　2　 price, whereas in China, in some small stores and tourists 　3　 , you are expected to bargain. I asked my Chinese friends to teach me how to bargain. They told me that I should ask for 40 % or 50 % 　4　 the price that the 　5 first offers me. Then, I should tell the salesperson that the same item is 　6　 at another store. If the salesperson doesn’t agree to my price I should 　 7　 to leave and he might ask me to come back and sell me the item for a lower price. Bargaining is a skill that you have to 　8　 if you live in China.

In China, you learn something new every day!

To this end, an all-round, balanced and effective reform of the international system is thus _______ must to prevent __________ future repeat．

　 A．the; the　　　 B．a(chǎn); the　　　 　　　　　　 C．a(chǎn); a　　　 D．the; a

It is necessary to t　　　 our education system.