How long has she been feeling unwell?
2)I've never met such a nice person before
3)I've been waiting for you since four o'clock.
4)She's never written a letter by hand since she bought a computer.
5)I wonder where you have been all this time
6)I've been learning English for five years
7)You never know how he is going to react.
8)She has tripped over the cat and fell nearly over.
9)Look! I found a ten-pound note! - Where did you find it?
10)Margaret is taking driving lessons now.
11)In recent years terrorism is becoming a greater threat.
12)The rain came suddenly and soaked all the washing.
13)Ever since we met, you have never asked me what I prefer to do.
When we saw (see) Brian he was driving (drive) a taxi.