Помогите раскрыть скобки (7 класс)1 if it ... (not/be) cold, they

1. if it (hadn't been) cold, they wouldn't have lit the fire.

2 if she studied more, she (would be) a better student.

3 they (wouldn't have seen) the Queen if they hadn't visited London on that day.

5 if i lived in France, I (would speak) French well.

6 if they (had locked) the doors, the burglars wouldn't have got in.

7 we (shall have) a party if Alan passes his driving test.

9 they (wouldn't have had) any money if their cousin hadn't lent them some.

10 those plants (won't grow) if you don't water them.

11 i would buy that bag if it (were) cheaper.

12 if she (had opened) the letter, she would have been surprised.

В  предложениях 4 и 8 точно нужно should? Оно здесь ни к месту.

4 If you should win that competition, you (be) rich.

8 I ... (give) John your message if i should see him today.

Должно быть так:

4 If you win that competition, you (will be) rich.

8 I (will give) John your message if i see him today.

ИЛИ так:

4 If you won that competition, you (would be) rich.

8 I (would give) John your message if I saw him today.

ИЛИ так:

4 If you had won that competition, you (would have been) rich.

8 I (would have given) John your message if I had seen him today.