2.
8 She has been worrying about this for two months.
9 She has been studying the driver's manual for hours every day.
10 She hasn't taken mother test yet.
11 I have had a headache since I got up.
12 He is my friend. I have known him for a long time.
13 Ivan has a stomachache. He has been eating junk food all day.
14 I have never heard that song before.