Exercise 19.2: The verb "do"

Fill in the blank with do, does or did.

Example: When ____ you get here?
Answer: When did you get here?

1. ____ you two know each other already?

2. ____ anybody know where the toilets are?

3. ____ not use that machine.

4. ____ it snow every winter?

5. I ____ not use to find work so tiring, but now I do.

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