1 two O’clock in the morning.
2 three hours
3 christmas
4 two days
5 ten days
6 five minutes
7 2009
8 last winter
9 16th June
10 a very short time
11 two weeks
12 a long time
13 World War II
14 seven years
15 the whole day
16 an entire week
17 August
18 the morning
19 last night
20 one day
