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 will go duck-shooting at 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 ago
c) Lorry is cooking breakfast for her family in the kitchen now
d) Lorry will cook breakfast for her family in twenty minutes
e) Lorry has already cooked breakfast for her family
3. a) i often fish by the river in the country in summer
b) i have fished by the river this evening
c) i shall (will) fish by the river tomorrov morning
d) i am fishing by the river at the moment
e) i fished by the river the day before yesterday