PRESENT PERFECT

Put the verbs in brackets in the PRESENT PERFECT and fill in the gaps(...) with these words: FOR - SINCE - ALREADY - YET

1. I (know) __________ her ................... six months, but (you, meet) ________ her boyfriend ................?

2. We (not finish) _______ this exercise ........... and Albert (tell) _____ ................ _____ it is too late.

3. We (live) _______________________ in this house ...................... 1992.

4. We (be) ______________________ friends .......................... six years.