从A～G中选出能填入空白处的最佳选项补全对话（有两项是多余的）。

1．________2．________3．________4．________5．________

　　Skin-diving（潜水）is a new __1__ today. This sport takes you into a wonderful new world. It is like a visit to the moon. When you are under water, It is __2__ for you to climb big rocks, because you are no __3__ heavy. Here, under water, everything __4__ blue and green. During the day, there is plenty of light. When fish swim nearby, you can catch them with your hands. When you have tanks（罐）of air on your back, you can stay in deep water for a long time. But you must be __5__ when you dive in deep water.

1．________2．________3．________4．________5．________

　　Liu Chang tells Mike that he should travel by train to Shanghai, because it is fun to take the train. Mike answers that his dad __1__ to fly. His dad says it's more expensive to fly, but it's __2__. Liu Chang repeats his __3__. He says he finds it cheap and __4__ to travel by train. Wang Dandan agrees. She says that the train is great and it's __5__ to ride the train.

1．________2．________3．________4．________5．________

Tony: Oh yeah, that's a thriller（恐怖片）. It sounds great.

Tony: Okay, how about a comedy（喜剧）? This one looks __5__.

1．________ 2．________ 3．________ 4．________ 5．________

从A～G中选出能填入空白处的最佳选项补全对话（有两项是多余的）。

1．________ 2．________ 3．________ 4．________ 5．________

A：Hey, Zhang Wei. How can we help the Earth?

B：We should __1__.

A：I see. What do you try to reduce?

B：I try to reduce water. __2__. How can you reduce?

A：__3__. This saves energy.

B：My parents often tell me that __4__.

A：That's right. So we __5__.

A：Look! There are lots of waste things in the river.

B：Yes.___ 1___.

A：Don't worry. ___2___.

B：What do you mean by that? ___3___.

A：It's called Earth Day. ___4___.

B：Great. ___5___.

A：Whose birthday is it today?

B：Li Chen and I. ___1___.

A：___2___. Happy birthday to you two.

B：Thank you.

A：Here are some flowers for you two!

B：___3___.Thank you very much.

A：___4___.

B：Ten of our friends have come. ___5___.

A：Wow! Cool!

A：Hello, what are you doing out here?

B：__1__

A：Earth Day?

B：Sure. __2__ It's our duty.

A：I see. __3__

B：We can pick up any garbage. And planting a tree is fun, don't you think so?

A：Yes. __4__

B：It's easy to help. __5__

A：Where are you going ?

B：___1___.

A：Why are you going there?

B：Because there was a storm in India, ___2___. So I want to be a volunteer there.

A：___3___.

B：I can work in a local hospital.

A：___4___ ?

B：I can also give some money and water.

A：Right ! ___5___