Fill in the blanks with ''for'', ''since''
1 I got here an hour ago. - What ! You mean you've been waiting .................an hour ?
2 I have not seen him ............he was 16.
3 I've known raining .............ages
4 Things have changed a lot .................our previous meetings.
5 It've been raining .............four o'clock
6 I'm sure he's been watching us ...........we came in.
7 He'd been here ...............over an hour when we arrived
8 I've been trying to fix this computer..............early this morning.
9 He hasn't had anything to eat ....................nearly a week.
10 It's three years..............he started learning German
11 He's been collecting stamps ...........the past twenty years.
12 Nobody has seen him................last Friday.
13 It has been foggy ..............some days.
14 He has been fishing ..................six o'clock
15They've been living in France......................eight years.
16 The pilots have been on strike .................two months.
17 We've had terrible weather .................Saturday
18 I've know Tom ..................1990
19 We have been waiting for the bus.................half an hour
20 She hasn't lost a match .......................April
21 Things have changed ...................she's become headmaster
22 The police have been looking for him..............a month
23 Our dog has been ill ....................two days
24 I've been looking for this book .,.................a long time
25 I've been working .................I got up