1 eats (Present simple), is eating (Present Cont), saw (Past simple), was eating (past cont), said (Past Simple), had eaten (Past Perfect), will fall (Future Simple), eats (Present Simple)
2 were walking and talking (Past Cont), stopped and said (Past Simple), have lost (Present Perfect), don't find (Present Simple), will have to (Future Simple)
3 came (Past Simple) learnt (Past Simple), had already left (Past Perfect)
4 What was he doing (Past Cont) when you saw (Past Simple) him yesterday?
5 will give (Future Simple) finish (Present Simple)
6 was crossing (Past Cont), broke (Past Simple)
7 I have never heard of her (Present Perfect)
8 To whom you have just written? (Present Perfect)