【题目】I woke up with bad headache, yet by evening the pain had gone.
A. the; the
B. the; an
C. a; the
D. a; an

【答案】C
【解析】句意：我醒来头疼，但是到晚上疼痛消失了。第一空表示泛指；第二空为固定用法，用定冠词the，故选C项。