—Excuse me but could you please turn the radio down?—Sorry Iyou could hear it.A. don’t r

问题补充：

—Excuse me, but could you please turn the radio down?

—Sorry, Iyou could hear it.

A. don’t realize

B. haven’t realized

C. didn’t realize

D. hadn’t realized

答案：

A. don’t realize

B. haven’t realized

(答案→)C. didn’t realize

D. hadn’t realized

解析：这题考查时态，根据句意：--对不起，请把收音机关小好吗？--对不起，我没意识到你听见了。因为是过去没意识到，所以用过去时 。选C。