There ______many restaurants in town, but they _________ eat the food there at first.A.used to have, didn’t use toB.used to have, didn’t used toC.used to be, didn’t use toD.used to be, didn’t used to
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C解析第一空是there be 的句型，不可能出现have，排除A、B。Used to do 的否定式是D选项而不是C。