1. they don't always come on time.
2. bill doesn't see his friends on saturday.
3. tom doesn't have a new computer.
4. this bird doesn't fly north in winter.
5. their child doesn't feed the cat.
6. i don't often visit my grandmother.
7. sally doesn't take french lessons.
8. we aren't at work now.
9. her aunt doesn't teach english.
10. the sun doesn't shine brightly.