81.4 Use the information given to complete the sentences.
1 If I leave my house at 9 o’clock and drive to the airport, I arrive at about 11. So it’s about .....two hours’ drive.... from my house to the airport. (drive)
2 If I leave my house at 8.40 and walk to the centre, I get there at 9 o’clock. So it’s ...................... from my house to the centre. (walk)
3 I’m going on holiday on the 12th. I have to be back at work on the 26th. So I’ve got ................  . (holiday)
4 I went to sleep at 3 o’clock this morning and woke up an hour later. After that I couldn’t sleep. So last night I only had ........................... . (sleep)