My chest __________ when I make a deep breath, doctor.
Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one ________.
Only by ______ your attention _____ what you are learning can you learn it well.
How proud she is! She has been ________ Beijing University.
I used to quarrel a lot with my parents, but now we ________ well.
---- She looks happy. She ________ have passed the exam.---- I guess so. It’s not difficult after all.