I was given three books on cooking the first I really enjoyed.A. of thatB. of whichC. tha

问题补充：

I was given three books on cooking，the first I really enjoyed.

A. of that

B. of which

C. that

D. which

答案：

A. of that

B. of which

C. that

D. which

解析：B

解析从句还原成完整句子应该是“I really enjoyed the first of those.”故选of which。