с заданием. First-second conditional

If no one came to help, we should be obliged to do the work ourselves.If you put on your glasses, you would see better.What should we do if they were late?Would you be very angry if we didn't come?Would he be very displeased if I didn't ring him up?They would all be surprised if I made such a mistake.If he didn't come in time, should we have to wait for him?

Should в условных 2 и 3 типа после местоимений 1-го лица сейчас не используется, это правило встречалось в англ. учебниках первой половины ХХ века))  Короче, такое употребление считается old-fashioned.

так что вот ответ:

1 If no one came to help, we would be obliged to do the work ourselves.

2 If you put on your glasses, you would see better.

3 What would we do if they were late?

4 Would you be angry if we didn't come?

5 Would he be displeased if I didn't ring him up?

6 They would be surprised if I made such a mistake.

7 If he didn't come in time, would we have to wait for him?