31. I believe the city can improve its traffic condition by ( offer) _____ more options of transportation.32. careerdevelopment （general）_____Refers to personal efforts by employeeTo learn and develop new skills.33.I'm writing to convey my warm congratulations on your (appoint)_______To the head of the board.34.According to the report (publish) _____Yesterday,More young people are pouring into the city to look for a job.35.The contract won't come into effort until it (sign) _____ bythe legal representatives of both parties.