Present perfect and Present perfect continuous

What has Daniel done?

• He has studying at Oxford University.
• He has studied at Oxford university.
• He been studying at Oxford university.

What have you done?

• I have save a lot of money.
• I'm saving a lot of money.
• I have saved a lot of money.

What have they been doing?

• They have been working on special projects.
• They have working on special projects.
• They working on special projects.

What has Sandy been doing?

• She has playing in a rock band.
• She has played in a rock band.
• She has been playing in a rock band.

How long have you played the piano?

• I have played the piano since 2 weeks.
• I have played the piano for 2 weeks.
• I have played the piano.

How long have you been speaking a different language?

• I have been speaking a different language since last year.
• I have been speaking a different language for last years.
• I have been not speaking a different language.

What have they already done?

• They already graduate from high school.
• They have already graduated from high school.
• They already have from high school.