1. The knife is used to dice a radish.
2. The box is used to wrap gifts.
3. The dancing room is used to play ping-pong.
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Are they all grammatical? Do we have to put a pause after 'used' in each sentence?
2. The box is used to wrap gifts.
3. The dancing room is used to play ping-pong.
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Are they all grammatical? Do we have to put a pause after 'used' in each sentence?