Выбрать между временами: Present Perfect или Present Perfect Continious

1. Steve ... (feel) quite depressed recently, so he is thinking of taking a week off to go skiing.
2. I ... (know) Professor Johnson since my first year at college.
3. Tom ... (wait) for the bus for nearly an hour and it hasnt come yet.
4. "I ... (always/live) in this town and I dont intend to leave now", said the old lady.
5. Her eyes are red because she ... (work) on the computer all morning.

1. has been feeling
2. have known
3. has been waiting
4.have always lived
5. has been working

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