Задание 5.Grammar in Use, 5c,Spotlight, 11 класс, Английский язык,О.В. Афанасьева,ГДЗ

Кто знает что здесь нужно сделать ?
Read the theory, then read the situations and
write sentences using didn’t need to /have to or
needn’t have, as in the example.
 
1     It wasn’t necessary for him to wash his car
yesterday as it rained during the night.
► He needn’t have washed his car yesterday
2     It wasn’t necessary for Mike to catch the bus
this morning as Tom promised to give him a lift.
3      We bought more food than was necessary.
4     They had lots of tomatoes, so they didn’t buy
any.
5      Angie cooked last night but we took her out.