𝗖𝗵𝗼𝗼𝘀𝗲 𝘁𝗵𝗲 𝗰𝗼𝗿𝗿𝗲𝗰𝘁 𝗼𝗽𝘁𝗶𝗼𝗻 𝘁𝗼 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝘁𝗵𝗲 𝘀𝗲𝗻𝘁𝗲𝗻𝗰𝗲.
You _____ memorise the whole thing. Just try to remember the key points.

• don't have to
• mustn't
• have to
• may