𝘾𝙝𝙤𝙤𝙨𝙚 𝙩𝙝𝙚 𝙘𝙤𝙧𝙧𝙚𝙘𝙩 𝙢𝙤𝙙𝙖𝙡 𝙫𝙚𝙧𝙗.
You _________ throw away empty bottles and jars. It's not a good idea.

• shouldn't
• may
• mustn't