We so tired. We've only been to a party.A. mustn't have feltB. wouldn't have feltC. shoul

问题补充：

We so tired. Weve only been to a party.

A. mustn have felt

B. wouldn have felt

C. shouldn have felt

D. couldn have felt

答案：

A. mustn have felt

B. wouldn have felt

(答案→)C. shouldn have felt

D. couldn have felt

解析：本题是情态动词的考查。should(not)后接动词的完成式表示“本来(不)应该做但实际上做了”的含义。