Put the verbs in the present perfect or the present perfect continuous tense

Ex4: Put the verbs in the present perfect or the present perfect continuous tense.
1. I (try)
yet.
2. She (read)
3. I (wait)
4. Mary (rest)
ill.
5. Although John (study)
6. Jack (go)
there.
7. We (live)
to come?
to learn French for years, but I (not succeed)
all the works of Dickens. How many (you read)
here nearly half an hour for my girlfriend; do you think she (forget)
his degree yet.
in the garden all day because she (be)
at the University for 5 years, he (not get)
to Switzerland for a holiday. He (never, be)
here for the last six months, and (just, decide)