HOME Ex5: Fill in the blanks with "must" or “have to” .
1. The sign says "Stop". You … …………………… stop here.
2. The teacher said:"You…… ………………… do all exercises on page 21 in Look Ahead."
3. I ……… ……………… help little brother more. My father said so.
4. I……… ………………take these medicines. The doctor said so.
5. Sorry, I can't come. I… ………… ………… clean my room. I can't live in such a mess anymore.