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1) The school (1) many complaints (2) parents, who were unhappy with the cost of school trips.
2) She was unhappy with the service and (3) a complaint (4) the manager.
3) The hotel received a complaint (5) the quality of the food in the restaurant.
4) He was sacked after someone made a (6) complaint about his work.__5__(完形填空)
.receive
.from
.made
.to
.about
.formal

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出自：2024年国家开放大学答案

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