（B）在横线上填入适当的单词或短语，补全对话．
A： What are you doing now？
B： I"m learning English．
A： What do you do that for？ You are a taxi driver， not a student． Is it (1) for you to learn English？
B： Yes， as we know， (2) was held in Beijing in 2008． After that， many foreigners will come， if I know much English， I will help the (3) all over the world．
A： And what"s more， China has been a member of WTO． So English will become (4) important than ever before． From now on， let"s (5) to learn English well．
B： Good idea!

【考点】补全对话

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