--- Isn't that Ann's husband over there?--- No, it ______ be him---I'm sure he doesn't wear glasses.
To her joy, Della earned first the trust of her students and then _____ of her colleagues.
---Haven’tItoldyouthatyoushouldbehomeearlier? ---Yes,butI_____homeearlierthanIusuallydo.
People develop ______ preference for a particular style of learning at ______ early age and these preferences affect learning.
It took him a long time to ______ the skills needed to become a professional artist.
We should take care of the blind. It is immoral to _______ them.