Question

Frank's dream was to have his own shop ______ to produce the

Answer 1

你先把这个句子看成两个句子：

1.Frank's dream was to have his own shop.

2.To produce the workings of his own hands in the shop.

其中shop 为公共部分用which代替,即可得到:

Frank's dream was to have his own shop which to produce the workings of his own hands in.

但是介词in 可以提前到which的前面就得到你题目中的句子.