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UN的漢語意思是         .

根據所給提示，完成句子。每空一詞，含縮略詞。

1.Why not go to a concert with your friends? (改為同義句)

What _____  _____ to a concert with your friends?

2.He has ever known the answers  (改為否定句)

He  _______  known the answers _______.

3.I have learned English since I arrived here.(劃線提問)

________  _________ have you learned English? .

4.She had few friends when she was 13, _____ _____? （改為反義疑問句）

5.我相信我的夢想將來會實現。

I believe my dream will  _______  _____in the future.