—What about conference you attended last week?—To tell the truth it was too boring you

问题补充：

—What about conference you attended last week?

—To tell the truth, it was too boring, you know, conference like that.

A. a; the

B. the; /

C. the; a

D. the; the

答案：

A. a; the

B. the; /

(答案→)C. the; a

D. the; the

解析：C 考察冠词。第一空特指上周参加的会议，第二空表示泛指，泛指这样的会议。