Complete the sentences with the correct form of the words in brackets. Use the Present Perfect Simple or Continuous.

It has been snowing (snow) heavily since we left home.
1 They (sell) the best works of art here for almost a century.
2 Our readers (send) a lot of questions to the invited guest, and the final the day to send your questions was yesterday.
3 My family (have) this painting for many generations.
4 Annie (not / wait) half an hour for her brother, but for her sister.
5 How long (you / study) at the Art College?