I did the first half of the exercises from Chapter 2 of Colloquial Estonian. Again, would someone please check my answers?

Thanks.
Bolded words are my answers. words in <> I didn't know.
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EXERCISE 1:
Respond in the negative as above:
1. Olge!
Ma ei ole2. Nähke!
Ma ei näe3. Minge!
Ma ei lähe4. Vabandage!
Ma ei vabanda5. Õppige!
Ma ei õpiSkipped Exercise 2 because it's too easyEXERCISE 3:
How would you say:
1. Tõnu Tamm isn't here
Tõnu Tamm ei ole seda2. Piret isn't in town
Piret ei ole linnas3. I'm not asking where she is
Ma ei küsi, kus ta elab4. She isn't at home either
Ta ei ole kodus <either>5. I'm not coming yet, I'm coming a little later
Ma ei tule <yet>, Ma tulen natuke hiljem6. I speak English
Ma räägin inglisi keeltEXERCISE 4:
1. We don't know the school
Me ei tea/tunne kooli2. She doesn't know Tallinn
Ta ei tea/tunne Tallinna3. I don't know the department store
Ma ei tea/tunne kaubamaja4. You (pl.) don't know the shop
Te ei tea/tunne kauplust5. I don't know that boy
Ma ei tea/tunne seal poissi---
Tänan!