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1.i (know) jim since high school, ~

현재완료니까 has knew 아닌가요?

2. i (visit) jim in prison since he was sent there last year.

현재완료니까 has visited 아닌가요?

3. he says the guards (not/ allow)the prisoners to watch tv for the last two month.

현재완료니까 has not allowed 아닌가요?

4. for the past few month, jim (write) a book about ~

현재완료니까 has written 아닌가요?ㅜ.