Fill in the blanks with since or for.
1We have been good friends ............... our university days.
Wrong!
Use "since" before the starting point "our university days".
2We have known each other ............... over twenty years.
Wrong!
Use "for" with the duration "over twenty years".
3I haven't seen him ............... January.
Wrong!
Use "since" before the starting point "January".
4Where have you been ............... I last saw you?
Wrong!
Use "since" before the clause "I last saw you".
5I have written six letters ............... morning.
Wrong!
Use "since" before the starting point "morning".
6I have known them ............... a long time.
Wrong!
Use "for" with the duration "a long time".
7How long have you been waiting ...............?
Wrong!
Use "for" in the question phrase "How long... for?".
8He will be in Amsterdam ............... a week.
Wrong!
Use "for" with the future duration "a week".
9It was the worst calamity ............... twenty years.
Wrong!
Use "for" with the period of time "twenty years".
10I had been working ............... morning, and I was getting tired.
Wrong!
Use "since" before the starting point "morning".
11He can watch TV ............... hours on end.
Wrong!
Use "for" in the duration phrase "hours on end".
12She has been a go-getter ............... her childhood.
Wrong!
Use "since" before the starting point "her childhood".
Answers
- We have been good friends since our university days.
- We have known each other for over twenty years.
- I haven’t seen him since January.
- Where have you been since I last saw you?
- I have written six letters since morning.
- I have known them for a long time.
- How long have you been waiting for?
- He will be in Amsterdam for a week.
- It was the worst calamity for twenty years.
- I had been working since morning, and I was getting tired.
- He can watch TV for hours on end.
- She has been a go-getter since her childhood.