―What do you think of the opening ceremony of 2008 Olympic Games?

―Wonderful. It’s years         I enjoyed myself so much.

       A．after                   B．since                   C．before                 D．when

—What do you think of the opening ceremony of 2008 Olympic Games?

—Wonderful. It’s years         I enjoyed myself so much.

A．after         B．since          C．before          D．when