---Where did you buy the T-shirt?---It was in the shopping mall _____ my mother works.A.thatB.whereC.whichD.from which
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B解析考查定语从句和强调句型。本题容易错选A项。定语从句where my mother works修饰先行词the shopping mall，在works后面省略了强调句的后半句I bought the T-shirt.句意：—你在哪里买到那件T恤的？—就是在我妈妈工作的那个购物中心里我买到的。故B正确。