单选题AStaff training.BBook-keeping.CCleaning and washing up.DGardening and flower arranging.
单选题
A
Staff training.
B
Book-keeping.
C
Cleaning and washing up.
D
Gardening and flower arranging.
参考解析
解析：
细节题。录音提到她们雇用学生“do the cleaning and washing up”，故C项正确。
细节题。录音提到她们雇用学生“do the cleaning and washing up”，故C项正确。
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