“陈桥兵变，黄袍加身”夺取皇权的是（ ）

A．宋太祖

B．宋太宗

C．辽太祖

D．元昊

—Do you still remember where we first met?

—Sure , just in the library.  And it ______at that time.

A．rained

B．was raining

C．has rained

D．is raining