– How long has Robot _________ ?
– Since2004.
A. been to Beijing B. become a policeman
C. joined the Art Club D. studied in this school
Great changes _________ in Nanjing since the1990s.
A. took place B. were taken place
C. have taken place D. have been taken place
My mother _________ a history teacher.
A. used to being B. is used to being
C. used to be D. is used to be
–Have you finished your homework?
– _________ . Just half of it. How about you?
A. Not at all. B. Not likely.
C. Not a bit. D. Not yet.
– _________ you ________ your lost football?
_Yes, I have. I _________ it an hour ago.
A. have found; found B. Did find; found
C. have found; have found D. Did find; have found
Though he __________ the book three times, he hopes to read it again.
A. read B. reads
C. has readD. would read
