20. One of the requirements for a fire is that the material ______ to its burning temperature.

　　A. were heated B. must be heated C. is heated D. be heated

　　21. Please ______ me at the station on time.

　　A. meeting B. to meet C. meet D. met

　　22. _______ “hello”, he reached out his hand.

　　A. Said B. Saying C. To say D. Say

　　23. People are more _______ to spend money on goods with an attractive look than those without.

　　A. attracted B. tempted C. persuaded D. tended

　　24. It was ______ he saw the doctor coming out of the emergeney room with an expression as grave as a judge _______ he realized the seriousness of his wife’s illness.

　　A. not until…that B. after…when C. until…then D. before…that

　　25. Please telephone me half an hour _______.

　　A. in charge B. in advance C. in time D. in front

　　26. Both Mary and Ellen, as well as Jan, _______ studying Chinese History.

　　A. are B. is C. are being D. is being

　　27. I’d like to _______ him to you for the job. He is a very clever and industrious boy.

　　A. refer B. suggest C. recommend D. propose

　　28. It ______ that 200 people died and over 5,000 lost their shelters after the flood.

　　A. reported B. reports C. has been reported D. has reported