She is so ______ that no one can everpersuade her.

—I remember you were a talented pianist at college.Can you play the piano for me?—Sorry，I ________ the piano for years.(2012·湖南)

With the college entrance examinationnear, both the parents and the students are more and more anxious.

For lunch, I usually have ________ and one sandwich.

By the time you come back, your aunt ______ for Nanjing to attend a meeting.