a). 2. a
3. b
4. b
5. b
b). PS: in 2009, yesterday, last Friday, during the 1990s, in the last few days
PP: ever, yet, just, for the past few weeks, already, never, since 2005, when I was at university
a). 2. a
3. b
4. b
5. b
b). PS: in 2009, yesterday, last Friday, during the 1990s, in the last few days
PP: ever, yet, just, for the past few weeks, already, never, since 2005, when I was at university