21. —Will it rain tomorrow?
—I _____.
A. think not so B. don’t hope so C. hope not D. don’t think it
22. We tried to find a seat on the bus, but they were all_________.
A. used up B. kept away C. taken up D given away
23. I don’t think it is difficult for a senior student to ________ the difference between “hurt” and “injure”.
A. separate B. divide C. choose D. tell
