题干
— It's dangerous to swim here. Look at the sign.
— Oh, I notice it. Thanks for telling me.
A：haven't
B：won't
C：don't
D：didn't
答案(点此获取答案解析）
D
— It's dangerous to swim here. Look at the sign.
— Oh, I notice it. Thanks for telling me.
A：haven't
B：won't
C：don't
D：didn't
