2.
Mary:Don't tell me you(11) ______ (study)for another exam!
John:That's exactly what I am doing.
Mary:What subject(12) ______ (be)it this time?
John:Biology,and it(13) ______ (be) a hard one for me.
Mary:(14) ______ you ______ (get)tired of studying all the time?
John:Yes.Sometimes I(15) ______ (want)to throw all of them right out of the window.
Mary:I don't know how you keep on with it.It's too hard to become an engineer.You (16) ______ (receive)2degrees.
John:But at least it doesn't take too long.I will be out putting up tall buildings.
Mary:I can never bear(忍受)it.
John:I must learn more. You know,one of my classmates (17) ______ (build) a building last year and unfortunately it crashed(倒塌)at the beginning of this year.
Mary:Yeah.I remember it.we(18) ______ (travel)in Hong Kong as we got the news on TV.
John:At that time I(19) ______ (decide) I should learn more. By the way,can you help me with my study now?
Mary:Yes,of course.
John:(20) ______ you ______ (read)out all these words?And see if I know what they mean.
Mary:I don't know how you remember them.