display incorrect answers
Complete the sentence with for or since.
- Natalie has been a vegetarian her 15th birthday.since + point in time
- I have been waiting more than two hours. Where are you?for + period of time
- The baby slept four hours this afternoon.for + period of time
- He’s been working for the company the 70s.since + point in time
- We haven’t lived here very long.for + period of time