A: Have you ever been to America?

B: Yes.

A: Well, I will go to an American friend's home to celebrate Christmas tomorrow, Could you please tell me what I am {#blank#}1{#/blank#} to do?

B: OK, with pleasure.

A: Should I arrive on time or five to ten minutes late?

B: Both are OK. But don't get there {#blank#}2{#/blank#}.

A: I'm {#blank#}3{#/blank#} that traffic might be terrible.

B: Well, if you're more than fifteen minutes late, it right be a good idea to call the host and tell him or her you're going to be late.

A: OK. Should I {#blank#}4{#/blank#} any flowers?

B: Certainly. Flowers are always welcome.

A: What should I do at dinner?

B: Watch the other {#blank#}5{#/blank#} and do what they do. You'll be OK.

A: I see. Thanks a lot.

B: You're welcome.

    Tigers are very strong and scary. We may see tigers in Europe, Asia and America in the mountains. The tigers live far away from {#blank#}1{#/blank#} houses. They eat birds, hares (野兔) and other small {#blank#}2{#/blank#}. In the day they hide in the dens (巢穴), and at night they go out {#blank#}3{#/blank#} food.

    In {#blank#}4{#/blank#} when tigers are hungry, they will become very {#blank#}5{#/blank#} But now, people cut down many {#blank#}6{#/blank#}, so tigers are losing their homes. Also, some people kill tigers to get {#blank#}7{#/blank#} fur. Some people even buy things made {#blank#}8{#/blank#} tiger bones (虎骨). So the number of tigers {#blank#}9{#/blank#} getting smaller and smaller.

    Animals are our {#blank#}10{#/blank#} friends. In order to protect them, we must build many natural reserves. And we must stop people from hunting.