根据所给单词的首字母及中、英文提示，写出所缺单词的正确形式。(每题1分，共15分)
小题1:He hit me on the head with a ball d_____________（on purpose） which made me very angry.
小题2:The a______________ (task) offered by the manager is difficult for him to finish.
小题3:We can also a__________________ (get) knowledge during playing.
小题4:Applicants for the job must have p_______________(earlier in time) experience.
小题5:Teachers are under increasing p (difficulties and feelings of anxiety) to work long hours.
小题6:In an emergency, you should call 120 to ask for an a_______________(a vehicle for carrying the sick or wounded people to hospital).
小题7:As a newcomer, you should try to get on well with your c____________(fellow workers).
小题8:He had to rewrite his essay， because his teacher said it needed p________________（润饰）in language.
小题9:Don’t throw away the bottles, which can be r___________________(回收利用).
小题10: An a__________（精确的）instrument is able to give you information that is correct to a detailed level.
小题11:Jack is an intelligent pupil, but he lacks m_________________ (动机，动力).
小题12:Having a fever is one of the s_________________(症状) of the common cold.
小题13:They decided to download the u_________________(更新的)software because their computer systems are out of date.
小题14:We are full of a________________（敬佩）for all your hard work.
小题15:Her father will d_____________（不同意）of her marriage to you.
