Два тестовых вопроса осталось. Помогите

Помогите !!! орфограмма в словах : природа, пылает, вечерняя ( заря ), начинается, солнце, никогда  не отогреешь улыбащийся восходит.

почему запятая? тут как первая часть так и вторая, придуманы автором.

помогите пожалуйста

WRITING

I Choose the correct answer

1 If you drop the vase my mother … you.

a) punishes b) will punish c) would punish

2 If she … not so slowly she would enjoy the party.

a) were b) is c) will be

3 If we had a chicken we … it.

a) cooked b) would cook c) were cooking

4 If you … my library book I will have to buy a new one.

a) will lose b) lost c) lose

5 If she … you were in hospital she would have visited you.

a) had known b) knew c) would have known

6 If I have a computer I … Computer Studies.

a) would learn b) will learn c) learn

7 If the weather had been nice we … go on excursion.

a) went b) would have gone c) will go

8 If I … you I would visit Jane yesterday.

a) was b) had been c) were

II Put the verbs in the brackets into the correct tenses

1 If he (eat) all that he will be ill.

2 If he had known the whole story he (not be) so angry.

3 If we had more rain our crops (grow) faster.

4 If you (paint) the walls white the room would be much brighter.

5 Ice (turn) the water if you heat it.

6 If she knew that it was dangerous she (not come).

7 I (take) a taxi if I had realised that it was such a long way.

8 The police (arrest) him if they catch him.

III Form the right type of the conditionals

1 If you (go) to bed earlier you (not fee) so tired.

2 If you (come) to my place I (show) you my collection.

3 If I (know) her well I (phone) her at home.

4 If she (not drive) so fast she (not crash).

5 If he (love) her he (stay) with.