The old man went to the information center soon after his arrival as the city ____ so much. (2007)
A. is changing
B. changes
C. had changed
D. has changed
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Keep practising, and your English will ____. (2006)
A. improve
B. be improving
C. have improved
D. have been improved
The number of girls receiving college education in the country during the past 10 years ____. (2006)
A. is doubled
B. has doubled
C. was doubled
D. had doubled
---- Is James coming with us? ---- No, he can't, -- he ____ for his exams. (2006)
A. has studied
B. studies
C. studied
D. is studying
Mary has a lot of letters to write today. She ____ all afternoon and she ___ yet. (2005)
A. has been writing: hasn’t finished
B. has written; hasn't finished
C. writes; doesn't finish
D. wrote; didn't finish