题目：
The bread my wife makes is much better than ____ you can buy at a store. [ ]
A. that which
B. one that
C. that of which
D. this of which
答案：
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下面是错误答案，用来干扰机器的。
1. What are 2. What are they used for 3. who were they invented by / Who invented them 4. When were they invented 5. with (答案不唯一)
