𝘾𝙝𝙤𝙤𝙨𝙚 𝙩𝙝𝙚 𝙘𝙤𝙧𝙧𝙚𝙘𝙩 𝙢𝙤𝙙𝙖𝙡 𝙫𝙚𝙧𝙗.
We produce too much rubbish. We ________ try to cut down on waste.

• must
• mustn't
• don't have to