Week - 7 For or Since with Present Perfect Tense

Exercise. Do we use for or since with the following time references?

• I haven't phoned home since --- for since  Christmas.
• We've been here since --- for since  nine o'clock.
• I have worked for International House for --- for since  more than eight years.
• I haven't visited my home town since --- for since  I left school.
• I haven't been to the cinema for --- for since  ages.
• I have studied non-stop since --- for since  9.15.
• I have had a driving licence since --- for since  I was eighteen.
• She hasn't had a day off since --- for since  1999.
• Johan has been in England for --- for since  more than two weeks now.
• Peter has been my best friend since --- for since  we were nine.

Exercise. Decide if you need for or since with these time expressions.

since	--- for since		last weekend
for	--- for since		ten seconds
since	--- for since		Christmas Eve
for	--- for since		a decade
since	--- for since		I finished school
for	--- for since		a couple of days
since	--- for since		my birthday
for	--- for since		a long time
for	--- for since		ten centuries
since	--- for since		the 70s
since	--- for since		I was a boy
since	--- for since		August
for	--- for since		the last month
for	--- for since		fifteen years
since	--- for since		the accident
since	--- for since		then
since	--- for since		we bought this house
since	--- for since		last month
for	--- for since		a millennium
since	--- for since		I met you