根据句意及首字母或汉语提示，写出各句中所缺单词的正确形式。
小题1:I had thought Paul worked very hard, but on the c , he was very lazy.
小题2:Women in modern society find it difficult to keep a b between career and family.
小题3:You’d better inform me of the date of the meeting in a .
小题4:We should take m to prevent students from using cell phones in class.
小题5:How can I c you of what I said?
小题6:Jim a (争辩) that he hadn’t stolen Lily’s watch.
小题7:Last Sunday I visited the largest wildlife (保护区) in our country.
小题8:You had better (咨询) your English teacher on how to learn English well.
小题9:During the war this village was (包围) by the enemy and more than 200 people were killed.
小题10:It is l (可能的) that 
the price of houses will go up.
