_________ you at home last Saturday?
A．Was B．Are C．Were
There ________ four people in my family.
A. isB. amC. are
I want to ________ a doctor.
A. beB. isC. are
Where ________ she come from?
A. doB. doesC. did
My dad ________ my pet dog.
A. take care ofB. take careC. takes care of
She likes ________.
A. play the piano B. playing the piano C. playing piano