Present perfect simple or continuous?

Judy: How long ______________ (be) in Canada?

Claude: I _______________ (study) here for more than three years.

• are you / 've been studying

• have you been / 'm studying

• have you been / 've been studying

• you have been / 've studied

I ______ (have) the same car for more than ten years. I'm thinking about buying a new one.

• have

• had

• 've been having

• have had

I ________________ (love) chocolate since I was a child. You might even call me a "chocoholic."

• 've loved

• have love

• 've been loving

• 've been loved

Matt and Sarah __________ (have) some difficulties in their relationship lately, so they ______ (go) to a marriage counselor. I hope they work everything out.

• have / have been going

• has / have been going

• have been having / have been going

• have had / 've went

John _______ (work) for the government since he graduated from Harvard University. Until recently, he ____________ (enjoy) his work, but now he is talking about retiring.

• has been work / has been enjoying

• 's been working / has been enjoyed

• 's worked / has been enjoying

• 've been working / 's been enjoying

Lately, I ______________ (think) about changing my career because I ______________ (become) dissatisfied with the conditions at my company.

• 've been thinking / 've became

• 've thought / 've been becoming

• 've been thinking / 've been becoming

• 've been thinking / 've become

I __________ (see) Judy for more than five years and during that time I have ______________ (see) many changes in her personality.

• 've been seeing / have seen

• 've seen / been seeing

• 've been seeing / seen

• 've saw / seen

I _________________ (swim) for seven years and I ______________ (win) some trophies.

• 've swum / 've been winning

• 've been swimming / 've been winning

• 've been swimming / 've won