2005-2010中石油職稱英語(yǔ)真題語(yǔ)法匯編.doc
動(dòng)詞時(shí)態(tài) (10) 27. Henry and Tom ____ to the parties at the Trade Union every Saturday. A. used to go B. were used to go C. are used to go D. use to go (10) 28. The crewman switched on portable flashlights as