—Let's have a game of tennis; the loser has to treat the other to a hot dog—.A. I'm afrai

问题补充：

—Lets have a game of tennis; the loser has to treat the other to a hot dog．

—.

A. Im afraid so

B. Its a deal

C. Youve got a point

D. My treat

答案：

A. Im afraid so

(答案→)B. Its a deal

C. Youve got a point

D. My treat

解析：考察交际用语。A恐怕是这样的。B成交；C你抓住了重点。D我请客。结合句意可知B正确。句意：我们来一场网球赛吧！输的人请对方吃热狗。—成交。