[简答题]Polar Bear Why must the bear Bing leave 选A． Because the bear is belonging to another zoo.

[填空题]Why is smoking so attractive to young people
Because it looks ______.

[简答题]The old lady must feel the cold a great deal because she doesn’t go out in the winter.

[填空题]Why did the people run out to see the horse
Because they were curious to see a horse eating ______.

[填空题]Why couldn’t the traveler get near the fire
Because the room was very ______.

[填空题]

Why do more Americans have to drive to work？
Because they have moved out of the （） to the suburbs.

[简答题]Polar Bear Why two bears in this zoo 选B．Have good facilities.

[单项选择]Why must they take Semco seriously
A. Because a company that can survive over a decade of Brazil’s inflation can’t just be neglected
B. Because transferring the model has much hope of success
C. Because the companies can together share the fruits of the success

[单项选择]Why must the workers wear thick glasses
A. To see clearly.
B. To protect them from dust.
C. To protect them from bad light.

[单项选择]Why must they meet at 7:00
A. Because they’re going to plant trees.
B. Because they don’t know the way.
C. Because they have to walk there.

[单项选择]Why must Mr Buck be back on Friday
A. It’s his daughter’s birthday.
B. It’s his son Sharon’s birthday.
C. It’s his wife’s birthday.
D. It’s his friend Sharon’s birthday.

[单项选择]
Why must air be pumped into the plane
A. The plane can’t fly without air.
B. The plane needs air for its refueling.
C. It meets the passengers’ needs.
D. It meets the pilots’ needs.

[填空题]

Conversation 1

Why must Professor Johnson leave by 8:30He is taking ______ home tonight.

[填空题]Why must we pay taxes The answer is that the government needs money for many things, for example, to pay its soldiers, sailors and airmen, to build roads, bridges, offices, schools, etc, and to buy goods from abroad ; and only the people of the country can supply the money. One of the most important taxes is income-tax which a person pays according to the amount of his income, whether he is a merchant, a doctor, a lawyer, a shopkeeper, a miner or anything else. This is called a "direct" tax, because it is paid in money directly to the government. Another tax is paid on goods such as watches, jewelry, new clothes, tobacco, wine, etc, when they are brought into a country. Such a tax is paid as part of the price of these goods if they are late sold in shops. We call it "indirect" tax, because it is paid indirectly through the shopkeepers. People usually complain about having to pay taxes, but they forget that the money is spent on things that they and their families need. We need policeme