5.(06II)occur A. position B. possible C. offer D. ocean
4.(05II)grade A.temperature B.classmate C.necklace D. fortunate
3.(98)prove A. stone B. route C. stove D. hook
2.(99)unit A. fierce B. nephew C. juice D. sure
1. (99)navy A. neighbor B. nationality C. relative D. valley
18.
17.
16.