PRESENT PERFECT + FOR , SINCE

I haven't seen them ...... ages

• a) for

• b) since

There haven't been any wolves in England ........ a long time

• a) for

• b) since

I have been living here ...... July

• a) since

• b) for

It's been a long time ....... I've had such a good meal in a restaurant

• a) for

• b) since

He hasn't been able to work ...... the last three weeks

• a) for

• b) since

They've known about it ...... a long time

• a) For

• b) Since

He hasn't worked this hard ..... he was at school

• a) for

• b) since

I haven't seen her ..... a fortnight

• a) for

• b) since

He's been here ....... three o'clock

• a) for

• b) since

I haven't seen them .... last week

• a) for

• b) since