Question

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Mum and dad are not right here now. They (go) to the supermarket
When He came downstairs he saw that somebody ( break into) the house
I (read) a book while my sister (play) the piano
Lily's eyes are red. She (cry)
The plane already (take off) by the time we got to the airport
This Friday they (fly) to new-York
This time tomorrow we (swim) in the sea with our friends

Answer 1

1.have gone
2.was breaking into
3.read,was plyaing
4.has been crying
5.had taken off
6.are flying
7.will be swimming