Complete the sentences and write them
1) do you know the holiday (which/who) people celebrate in Februare? 2) What is the name of the man (who/whose) greeting card you got yesterday? 3) I like to talk to people (which/who) know a lot. 4) My friend lives in the house (which/whose) door and windows are dark green.

1) do you know the holiday which people celebrate in February? 2) What is the name of the man whose greeting card you got yesterday? 3) I like to talk to people who know a lot. 4) My friend lives in the house whose door and windows are dark green.