8. these students usually don't do their homework carefully
9. John often gets to school early
10. It never rains here in the summer
11. Some students do exercises at break time

these students don't always do their homework carefully
john often gets to school early
it never rains here in the summer
some students do execirses at break time
she sees her friends at the weekend
they often go to see a film
she sometimes has dinner with her friends