填空题

The research team never gave up (try) ______ although they had failed several times.

【参考答案】

trying
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填空题
Professor Smith, I’m (extreme) ______ sorry for being late. Please forgive me.
单项选择题
A．Yes, I feel so.B．Never mind.C．Why not!D．No, I don’t feel so.
A．Yes, I feel so.
B．Never mind.
C．Why not!
D．No, I don’t feel so.
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