15. Listen the birds are singing.
16.We don't spend summer in New York.
17.In summer we usually go to the seaside.
18 Look at Tom! He is riding a horse.
19.In sometimes snows here in April.
20.It isn't snowing now.
21.Does mother cook breakfast for us every morning?
22.Look! Mother is cooking breakfast.
23. Father isn't driving his car now.
24. Do you often watch TV?
25.Are Nick and Peter sitting in armchairs now?