Sarah and Robert/ make their beds (it's 8 pm now)
They have already made their beds.
Sarah/ finish dinner ( it's 8 pm now)
Sarah hasn't finished dinner yet
Sarah / do a maths test (it's 8 pm now)
Sarah has already done a maths test
Sarah/ watch TV( it's 8 pm now)
Sarah has already watched TV
Robert /have a shower (it's 8 pm now)
Robert has already had a shower
Sarah and Robert/ clean their teeth (it's 8 pm now)
They haven't cleaned their teeth yet
Robert/ finish dinner ( it's 8 pm now)
Robert has already finished dinner
Sarah and Robert/ practise the piano (it's 8 pm now)
They have already practised the piano.
Sarah/ have a shower (it's 8 pm now)
Sarah hasn't had a shower yet
Robert/ watch TV ( it's 8 pm now)
Robert hasn't watched TV yet
Robert/ do a maths test ( it's 8 pm now)
Robert hasn't done a maths test yet