I ____ ride a bike. I always fall off. You look sick. You ____ see a doctor. Remember, you are in a library. You ____ speak loudly. Don't forget to take an umbrella. It ____ rain later. We ____ chew gum during the lesson. You ____ have to make pancakes. I've already made some. Sorry, I ____ come yesterday. I was busy. Student's ____ borrow up to four books at a time. ____ you help me with my homework? You ____ talk to older people like that. It's rude.

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