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More and more teenagers are ______ about the protection of the environment. It’s a good sign.

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If you study hard, you ______ pass the final exam easily.

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Although the exam was really difficult, everyone ______ finish it on time.

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You ______ always look both ways before crossing the street.

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You ______ smoke in a hospital.

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Tom: “Which careers involve helping people?” – Susan: “______”

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You ______ do something you aren’t sure about.

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The car is too expensive so we're trying to find a cheaper _______.