Beautiful day isn’t it? Shall we go out for a picnic?!A. Sounds greatB. Good luck

问题补充：

--- Beautiful day, isn’t it? Shall we go out for a picnic?

--- !

A. Sounds great

B. Good luck

C. You are right

D. Have fun

答案：

(答案→)A. Sounds great

B. Good luck

C. You are right

D. Have fun

解析：考查交际用语。A听起来很棒；B祝你好运；C你是对的；D玩得开心；句意：—今天的天气很好，不是吗？我们去野餐好不好？—听起来很好！根据上下文说明A正确。