21. We went right round to the west coast by ___ sea instead of driving across ____ continent.
A. the, the B. /, the C. the, / D. /,/
22. He is the only one of the people here who ____ how to operate the computer.
A. knows B. know C. had known D. known
23. ——How about your new school?
—— I couldn’t feel _____ about it. All my teachers are very kind and helpful.
A. better B. worse C. best D. worst
