1 I...(did) some snowboarding ,while I....(skiing) in Switzerland, but I...
2. (have not try) ice-skating yet.
3.She .... (has had) this coat for only two years now, I don't know why you... (suggested) buying a new one yesterday.
4. Ever since he .... (met) her two months ago , he....(hasn't stopped) thinking of her, and he... (keeps asking) everybody about her.
5. I...(had) a splitting headache this morning, so I ....(have taken) three aspirins today.