Put the verb in brackets in the present perfect and fill in the blanks

with since or for
1. I first met her in 1990. I (know) ......... her ....... 1990.

2. We moved to this city last month. We (live) ............ in this city ...... last month

3. She first met Paul two years ago. She (know) ...... him ...... two years

4. They started working for this company last year. They (work) ...... there ..... two years.