𝘾𝙝𝙤𝙤𝙨𝙚 𝙩𝙝𝙚 𝙘𝙤𝙧𝙧𝙚𝙘𝙩 𝙢𝙤𝙙𝙖𝙡 𝙫𝙚𝙧𝙗.
Mum says that we ________ pick up any litter we drop.

• have to
• may
• has to