It's better refer we don't speak at

It's better refer we don't speak at it's better if we don't speak at all, 这句话是什么意思!我要用英文怎样回答!啊 谢 We don't speak English We don’t speak Chinese. It's Better If You Don't Understand什么意思? don't all speak at once!_please. Don't speak at once!________,please. Don't s____ out late at night .It's dangerous. Don't l______ at others It's not polite Don’t b_____ at anyone .It's not polite Don't you think it's time we ________ business? It's raining outside.We don't know where (play)