—We were surprised to hear that the reason she gave for her absence was her mother was i

问题补充：

—We were surprised to hear that the reason she gave for her absence was her mother was ill.

—Yes.We saw her mother was at the supermarket that morning.

A. why；that

B. which；that

C. that；because

D. why；because

答案：

A. why；that

B. which；that

C. that；because

D. why；because

解析：B

解析第一空可填which或that来引导定语从句，而第二空的表语从句必须用that引导。