单项选择题
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A.Because repair costs have increased,
B.Because they like the courses,
C.Because they like plumbing.
D.Because the courses cost less.
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单项选择题
A.In a university.B.In a library.C.In a bookstore.D.In a supermarket.
A.In a university.
B.In a library.
C.In a bookstore.
D.In a supermarket.
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填空题
B
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