题目内容
Complete the sentences with the correct preposition (at, in or on). 1. He’s ______ vacation. 2. I work ______ the Citicorp building. 3. Mrs Agnelli’s office is ______ the fourth floor. 4. I’m afraid she’s ______ a meeting. 5. She’s ______ lunch. 6. He’s ______ a business trip.
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