After days of fantastic space trip the three astronauts walked out of the spaceship .A.

问题补充：

After days of fantastic space trip, the three astronauts walked out of the spaceship, .

A. tired but happy

B. tiredly but happily

C. tiredly and happily

D. tired and happy

答案：

(答案→)A. tired but happy

B. tiredly but happily

C. tiredly and happily

D. tired and happy

解析：形容词通常用来说明主语的情况，常常可以单独或者引起一短语作状语；可以表示原因，也可以表示动作的情况或者方式，或者表时间，表原因。