题目内容：

I’m afraid I must go now.
A.I agree.
B.Well,thanks for coming.
C.So do I.
D.Yes,please.

优质解答

选b.
结合语境I’m afraid I must go now意思是“我恐怕必须得走了”
a ：I agree 好吧我同意.这么说闲得很生硬,没礼貌
c：so do i 我也得走了.没有上下文,看不出来他也要一起走
d：行,请走吧.同a,没礼貌
综上,xuanb