Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子。每空格限填一词) (共8分)
小题1:The prices of many__________ usually go up during festivals．(flower)
小题2:This is the__________ time for our school to hold the robot-making contest．(six)
小题3:I could hardly believe she had made a video about water pollution by__________．(her)
小题4:The company hopes its new product will be__________ on the European market．(success)
小题5:Larry has put on too much weight because of his__________ diet．(healthy)
小题6:Jack finds it difficult to pronounce some English words__________．(correct)
小题7:Don’t use the lift when you escape from a high__________ during a fire．(builD.
小题8:It is not wise of young people to__________ their jobs from time to time．(changeable)