1
a Howard and Philip usually go duck - shooting at the end of August,
b Howard and Philip are going duck - shooting at the moment.
c Howard and Philip went duck - shooting the other day.
d Howard and Philip have gone duck - shooting this morning.
e Howard and Philip will go duck - shooting tomorrow.
2
a Lorry sometimes cooks breakfast for her family in summer.
b Lorry cooked breakfast for her family in the kitchen an hour and ago.
c Lorry is cooking breakfast for her family in the kitchen now.