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题型：单选题题类：易错题难易度：普通

— Don't put the waste on the ground, young man.
— Oh, I'm sorry. I ______ the dustbin there.

A、hadn't see B、haven't seen　 C、didn't see D、wasn't seeing

举一反三

What p{#blank#}1{#/blank#} us was how the accident could have happened.

I deeply {#blank#}1{#/blank#}(遗憾) what I said just now.

She {#blank#}1{#/blank#} (克服) injury to win Olympic gold medal.

吉姆说在昨天的选举中，他投票支持戴茜。

Jim said he {#blank#}1{#/blank#} {#blank#}2{#/blank#}Daisy in yesterday's election.

Either she didn't see me or she {#blank#}1{#/blank#}(不理睬) me on purpose.

几天前我正在网上冲浪，这时电脑突然坏了。(be doing...when...)

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