I've never seen anyone run so fast －________ David go.

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He sent me an E-mail, ________ to get further information.

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She will tell us why she feels so strongly that each of us has a role ________ in making the earth a better place to live.

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I've worked with children before, so I know what ________ in my new job.

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A similar wrong idea is that fish and ice cream when ________ at the same time form a poisonous combination(有毒物质).

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I was halfway back to the factory where my mother lived ________ Susan caught up with me.

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He will surely finish the job on time ________ he's left to do it in his own way.

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________ difficulties we may come across, we'll help one another to overcome them.

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He usually goes to work by bike ________ it rains.

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I'll never forget ________ you for the first time.

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