Present Perfect или Present Perfect Continuous

8 She has been taking French lessons lately.
9 It hasn't been raining for three hours! Only about one hour.
10 Lucy has already left.
11 How many times have you visited Scotland?
12 I have been calling John for hours and hours and he hasn't answered.
13 I have been in London for three years.
14 We have known James for ages.
15 It's really smelly in here. Has somebody been smoking?
16 How much petrol has she bought?
17 She has been eating chocolate all morning, so she feels sick.
18 I have been painting my house all day, but it 's not finished yet.
19 Julie has been at the office since 6 am.
20 The waiter has deserved this award for a long time.