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题型：语法填空（单句）题类：难易度：普通

人教版（2019）选修二Unit 1 Science and Scientists Reading and Thinking同步练习

The two(saleswoman) were busily trying to serve customers.

举一反三

Anyway, I can't cheat him-it's against all my {#blank#}1{#/blank#}(原则).

If you have a chance to travel in West Europe, the {#blank#}1{#/blank#}(城堡) is well worth a visit.

If there is truly a{#blank#}1{#/blank#}(担忧) about a professor's ability, be sure to use online course evaluations to calmly offer your comments.

The park has plenty of restaurants with tasty food for every a{#blank#}1{#/blank#}—you can even eat while watching the fish swim by.

He chose a singularly inappropriate moment to make his {#blank#}1{#/blank#}（要求）.

I would be happy to help, but I want a {#blank#}1{#/blank#}（提成） of your profits.

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