John speaks English ___________, if not better than, David.
It may be necessary to stop _____ in the learning process and go back to the difficult points in the lessons.
—Where would you like to sit? In the corner or near the platform? —______.I would like to sit by the piano so that I can watch the musician play.
Life is like __________ ocean; only __________ strong-willed can reach the other shore.
--- Kim, give me your report by 1O am. --- __ have you been in charge of this project?
–What’s that noise? –Oh, I forgot to tell you. The new machine ______.