It is getting late. I am afraid I must be going now! OK A. Take it easyB. Take time outC.

问题补充：

It is getting late. I am afraid I must be going now!

OK,

A. Take it easy

B. Take time out

C. So long

D. Stay longer

答案：

A. Take it easy

B. Take time out

(答案→)C. So long

D. Stay longer

解析：四个选项分别表示不要着急、暂停下来、再见和再呆会儿，根据题意选C，天晚了，恐怕我现在得走了。——好吧！再见。