横线后面应该是句号吧,回答
OK,we won't.
好吧,我们不会的.
we won't 是正确的,因为这个句子相当于一个否定祈使句,即
Don't play on the street.It's dangerous.
OK,we won't.
回答祈使句时,应该用we won't,不能用we don't.
有不明白的请继续追问,