A. I have heard
B. I heard
C. have I heard
D. did I hear
[单选题]Training astronauts ______not an easy thing.A.areB.isC.wereD.be
The campus ______ I spent my college life on is very beautiful.A. thatB. whichC.
[单选题]I _____ the wrong thing. Can I use your eraser?A. write B. wrote C. am writing D. will write
Fool __________ Jane is, she could not have done such a thing.A. whoB. asC. that
The economic recession has indicated that job _ is a rare thing.A. securityB. sa
Dont resort to cheap copies ____ for the real thing.A. saveB. save upC. make upD
[单选题]A. very B also C seldom D not
[试题]Was Fred very poor,but seldom unhappy?(1.5分)________________________________________________
You __________ all those calculations! We have a computer to do that sort of thi
[单选题]You __________ all those calculations! We have a computer to do that sort o