Situations
'The car broke down yesterday.' 'Not again! That's the second time .................................................... (happen) this week.'
It's happened / that's happened
Len is playing tennis. He's not very good and he doesn't know the rules. You ask: Have ............................................... He says: No, this is the first ........................................
Have you played tennis before? Not, this is the first time I've played tennis.
You look tired. ....................................................... (you/work) hard?
Have you been working
A friend of yours is saving money to go on holiday. You ask: (how long / save?) (how much money / save?)
How long have you been saving? How much money have you saved?