A. /; a B. the; a C. the; / D. /; /
Selecting a digital camera for personal use is no easy task because technology ______ so rapidly.
A. is changing B. has changed
C. will have changed D. will change
As soon as I was on _______, I began to have second thoughts about leaving.
A. abroad B. broad C. aboard D. board
― Finally I got to my grandmother’s home on foot.
― Really? You _______ a ride there.
A. must have taken B. could have taken
C. shouldn’t have taken D. couldn’t have taken
You don’t permit _______in the office, but you are permitted ______in the waiting room.
A. to smoke;to smoke B. to smoke ;smoking
C. smoking ;to smoke D. smoking; smoking
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