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题型：单词拼写（单句）题类：常考题难易度：容易

高中英语人教版（新课程标准）2017-2018学年高二下册选修七Unit 2 Robots同步练习1

There were (堆) of litter in the streets.

举一反三

Since 1978, the amount of money a{#blank#}1{#/blank#}(可用的) to buy books has fallen by 17%.

We can't focus on our work because of the {#blank#}1{#/blank#} (disturb) noise.

Last Friday the teachers and students in No 1 Senior High held a grand ceremony in {#blank#}1{#/blank#}(庆祝) of the opening ceremony of the Art Festival in our school.

He closed the door before she could stammer out her {#blank#}1{#/blank#}(解释).

A red lamp is often considered to be a danger {#blank#}1{#/blank#}（信号）.

Everybody is required to p{#blank#}1{#/blank#} (参加) in the spring outing.

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