单选题 Your English is quite good. I thought you were American- ______.
A. If that doesn't make things worse
B. If I do say so myself
C. I'll take that as a compliment
D. I mean that as a compliment

【正确答案】 D
【答案解析】[解析] 破折号后的内容是对“I thought you were American”的补充说明。选项C时态不正确。