—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

旅游资源开发条件的评价包括建设施工条件、区位条件、（）和（）。