单项选择题

(fasten) ______ your seat-belt, please!
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In (compare) ______ with what you promised us earlier, what you have done has really disappointed us.
In (compare) ______ with what you promised us earlier, what you have done has really disappointed us.
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Most vegetables, to (enjoy) ______ in their full deliciousness, must be picked fresh and cooked at once.
Most vegetables, to (enjoy) ______ in their full deliciousness, must be picked fresh and cooked at once.
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