摘要： When you visit a museum you must ask permission before taking photographs inside it. A./; / B.a; the C.a; / D./; the
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When you visit a museum you must ask ___permission before taking ___photographs inside it.
A. /; / B. a; the C. a; / D. /; the
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When you visit a museum you must ask for _____ before taking photographs inside it.
A. promise B. permission C. consideration D. support
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