--Let’s go for a walk in the garden. but I need to do the washing-up first.A. Good id

问题补充：

--Let’s go for a walk in the garden.

-- , but I need to do the washing-up first.

A. Good idea

B. That’s right

C. No, thank you

D. Not at all

答案：

(答案→)A. Good idea

B. That’s right

C. No, thank you

D. Not at all

解析：考查交际用语。A好主意；B那是对的；C不，多谢；D一点也不；句意：—我们去花园里散步吧！—好主意。但是我先要洗澡。根据句意说明A正确。