I played tennis yesterday

1. Did i play the tennis yesterday?

2. Did i play tennis or football yesterday?

3. What did i play yesterday?

4. When did i play tennis?

5. Who did play tennis yesterday?

5. I played tennis yesterday, didn't i?

I'm writing a letter now

1. Am i writing a letter now.

2. When am i writing a letter?

3. What am i writing now?

4. Am i writing a letter or a paper now?

5. Who is writing a letter now?

6. I'm writing a letter now, am not i?