从方框中选择适当的句子补全对话。(有两项多余)

　　Li Meng is studying in a middle school in Australia．He is going to have an important exam next week．Now he is worrying about it when he meets his friend Daniel．

　　Daniel：Hi,Li Meng．

　　Li Meng：Hi,Daniel．

　　Daniel：Oh,Li Meng．You look worried．　　1　　

　　Li Meng：Yeah,Daniel．We are going to have an exam next week,But I don't think I'm well ready for it．

　　Daniel：What subject is it?

　　Li Meng：　　2　　 The main problem is not the knowledge but the language．

　　Daniel：You mean you can't understand the knowledge of science well because of the language．

　　Li Meng：Yes．Every time I finish a science class,　　3　　

　　Daniel：I see．I think that you should use your dictionary more often,when you read the science textbook,and you'll understand it better．

　　Li Meng：　　4　　 But what shall I do with my exam?

　　　　5　　

　　Daniel：Don't worry．Let me help you．I am good at science．We can go over science together．

　　Li Meng：Thanks a lot．

　　Daniel：You are welcome．There is nothing to worry about now．Let's start this afternoon．

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