.In this experiment, they are woken up several times during the night, and asked to report what they＿＿＿＿.

A．had just been dreaming

B．are just dreaming

C．have just been dreaming

D．had just dreamt

下列孔轴配合中选用正确的是（）。

A.H8/u8

B.G6/h7

C.H5/a5

D.H5/u5