Question

2.-Decide whether to use »since« or for«.
I have been waiting
4 o'clock.
Sue has only been waiting
20 minutes.
Tim and Tina have been learning English
six years.
Fred and Frida have been learning French
1998.
Joe and Josephine have been going out together
Valentine's Day.
I haven't been on holiday
last July
Mary has been saving her money
many years.
I haven't eaten anything
breakfast.
You have been watching TV
hours.
We have been living here
2 months.​

Answer 1

I have been waiting since 4 o'clock

Sue has only been waiting for 20 minutes

Tim and Tina have been learning English for six years

Fred and Frida have been learning French since 1998

Joe and Josephine have been going out together since Valentine's Day

I haven't been on holiday since last July

Mary has been saving her money for many years

I haven't eaten anything for breakfast

You have been watching TV for hours

We have been living here for 2 months