Question

4. I showed an old friend of mine around the city,        the changes had been so great (to)

我带领一位老朋友参观这座城市，令他惊讶的是这里变化如此之大。

Answer 1

4. to whose surprise本题考查非限制性定语从句，此处不可用to his surprise ,因题干中用的是逗号，表明此句只是一个从句。