If it (not/be) cold, they (not/lit) the fire. If she (study) more, she (be) a better student. They (see) a lot of museums, when they (visit) London. I (learn) French as soon as I (go) to France.

if it is not  cold, they will  not   lit the fire.

If she studies more, she will be a better student.

They will see a lot of museums,  when they visit London.

I will learn French, as soon as I go to France.

1) If it isn't cold they won't lit the fire.

2) If she studies more she will be a better student.

3) They will see a lot of museums when they visit London.

4) I'll learn French as soon as I go to France.