Though he had changed a lot, I _________him at once.
A. noticed B. recognized
C. realized D. revealed
The officer commanded that everyone passing by ______ that day.
A. search B. would be searched
C. be searched D. must be searched
As you can see, the number of cars on our roads __________ rising these days.
A. was keeping B. keep
C. keeps D. were keeping
Many students believe that the choice of their courses and universities should ________their own interest.
A. be based on B. base on
C. be basing on D. base at
After the examination, my teacher told me that failure________the mother of success.
A. was B. is
C. be D. been
I “ll go to the library as soon as I finish what I ______.
A. was B. am doing
C. have done D. had been doing
