Choose the best answer to complete the sentences below.

While the front door ___________, please use the side entrance.

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She speaks English as ___________as I do.

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I knew they were talking about me ___________ they stopped when I entered the room.

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The librarian told us not ___________ reference books out of the library.

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Many students aren't keen ___________ their study at school.

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The students didn’t know________ to do to deal with the problem.

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He asked ___________ it was too early to apply for the course.

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We can’t go along here because the road ___________.