No matter how much knowledge you have, if your subject is at all ______, be careful when discussing it during your speech, or you may well offend your audience.
A. diverse B. sensitive
C. abstract D. original
It is the third time that she has won the race, ______ has surprised us all．
A．that B．where C．which D．what
English is a language shared by several diverse cultures, __________ uses it differently.
A. all of which B. each of which
C. all of them D. each of them
The woman burst into tears ________she was announced the winner.
A. that B. instantly
C. unless D. in case
Just be patient．You _____ expect the world to change so soon．
A． can’t B． may not
C． needn’t D． didn’t
--- Do you remember when I first met you?
---- Of course. I ___________ at Oxford University.
A. studied B. had studied
C. have studied D. was studying
