87．He made full preparation for the examination_______(以便能顺利通过考试)．

　　88．Seniors need to increase their water intake and_______ (有规律地参加身体锻炼)．

　　89．It is generally not advisable that_______ (小孩在低年级时学习负担过重)．

　　90．A decreasing number of today’s workers are willing to work in the same field，_______ (更别说在同一家公司了)．

　　91．Kids who often struggle over words and_______ (理解课文有困难)find little enjoymentin the process of reading．

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