21．—I knocked over my coffee cup. It went right overkeyboard.
—You shouldn’t put drinks nearcomputer.
A．the, / B．the, a C．a, / D．a, a
22．—I’m thinking of the test tomorrow. I’m afraid I can’t pass this time.
—! I’m sure you’ll make it.
A．Go ahead B．Good luck C．No problem D．Cheer up
23．The young man acted strangely during the interview. He made a badon the employer.
A．expression B．impression C．effect D．opinion
24．The house rent is high. I have to payas I used to.
A．as five times much B．as much four times
C．much as four times D．four times as much