Fill the blank 1."Dear Sir" and "Dear Madam" are ___ which people use when they write letters
2.Have you any ___ to make about the reading passage?

dear sir and dear madam is used according to gender if u talking to girl than put dear madam

Explanation:

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the best practice

1. keep your workspace clean

2. wash your hands

3. seperate and clean chemicals and equipment

4.   use microfiber cleaning utensils

5. clean and sanitize all work surfaces

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