1. I really like Zarina. I've known(know) her since I was ten.
2. You have had. (have) a cold...for..... two weeks. Go to the doctor!
3. My mum's really good at French. She.has studied (study) it for 10 years.
4. I dont know where Peter is. I .haven't seen..(not see) him..since this morning.
5.We .haven't been.. (not be) to the cinema..for a long time. Why don't we go this weekend?