Were people in the past smarter than now? Why/ why not?

a nurse is a person who takes care of sick people. где остальные ?

linda said if steve would like a cup of tea.

вообще, лучше было бы "спросила" - asked, а не said.

do you know the wilsons? they*re a very friendly family.

определенный артикль the ставится перед именами собственными (фамилиями), обозначающими целиком всю семью. 

1.) it (was) sunday yesterday and they (were) at home.

возможен и этот вариант:

  it (was) sunday yesterday and they (weren't) at home.  2.) kim (was) at her grandmother's yesterday.

возможно:

  kim (wasn't) at her grandmother's yesterday.  3.) she (is) at home.  4.) mum and dad (were) at work yesterday.  возможен и этот вариант:

  mum and dad (weren't) at work yesterday.  5.) they (are) in the village.