9. If we (have) free time, we (go) for a walk.
10. If we (go) for a walk, she (go) with us?
11. If she (go) with you, she (not/ do) her homework.
12. If she (not/ do) her homework, she (have) problem at the lessons.

9. If we have free time, we will go for a walk.

10. If we go for a walk, will she go with us?

11. If she goes with you, she won't do her homework.

12. If she doesn't do her homework, she will have problem at the lessons.

Объяснение: