根据对话内容，从下面方框中选择适当的单词填空，使对话内容完整正确。

Reporter：Can you introduce something about your latest class activity?
Monitor：Sure. The students from our class planted some lines of trees on March 12^th, 2008.
Reporter：How did you plant trees?
Monitor：First, the students were                  【小题1】              into groups of four. Next, each group of students planted a tree. Then, they poured some water over the trees.
Reported：How do you    【小题2】     for the trees?
Monitor： We plan to come back and look after the trees          【小题3】              .
Reported：Sounds good. Could you tell me why you choose to do that?
Monitor：As you know, pollution has become one of the most serious    【小题4】   . We would like to try our best to improve our environment. 
Reporter：Well, it’s very meaningful. If everyone can do something to protect the environment        【小题5】, our city will become much more beautiful.

选词填空：根据对话内容，用方框中所给单词的适当形式填空，每词限用一次。

根据对话内容，从下面方框中选择适当的单词填空，使对话内容完整正确。

Reporter：Can you introduce something about your latest class activity?

Monitor：Sure. The students from our class planted some lines of trees on March 12^th, 2008.

Reporter：How did you plant trees?

Monitor：First, the students were                   76              into groups of four. Next, each group of   students planted a tree. Then, they poured some water over the trees.

Reported：How do you    77      for the trees?

Monitor： We plan to come back and look after the trees           78              .

Reported：Sounds good. Could you tell me why you choose to do that?

Monitor：As you know, pollution has become one of the most serious    79    . We would like to try our best to improve our environment. 

Reporter：Well, it’s very meaningful. If everyone can do something to protect the environment         80         , our city will become much more beautiful.

选词填空：根据对话内容，用方框中所给单词的适当形式填空，每词限用一次。

Bill: I saw a great programme on TV about space yesterday evening.

Tony: What is   1.   about?  

Bill: Scientists have discovered   2.    on Mars.

Tony: Really? That’s very fantastic. Have they discovered life on Mars?

Bill: Well, they’re looking   3.   life but they haven’t found anything yet.

Tony: I know there’s   4.   life on the moon.

Bill: Yes, that’s right. So far there’s only life on  5.   .

Tony: Are we alone with so many stars in the universe?

Bill: I am interested in it, so I want to be a scientist when I grow up.

Tony: I wish you will.