possible；      tidy；        go on a school trip；       rain hard；           have a fever； look for；   such as；      be strict with；            take place；          pass away

（1）﹣Timmy，your bedroom is dirty and　　

         ﹣Sorry，Mum．I'll clean it right away．

（2）﹣You look so worried．What can I do for you？

        ﹣I　　my key．Have you seen it？

（3）Louis Cha Leung﹣yung，one of the greatest Chinese writers ，　　last year．He built a fantastic wuxia world and created different types of heroes．

（4）Do scientists agree that there′s a　　that humans in the future would live on Mars？

（5）It　　，but the boys went on playing football on the playground．

（6）The smiths　　their children about table manners and always remind them to behave well．

（7）﹣I　　since last night．

       ﹣You′d better go to see a doctor．

（8）Alibaba opened a hotel in which a series of tasks　　check﹣in，light control and room service can be done by AI and robots．

（9）The rainy season usually　　from June to September in my hometown．

（10）﹣More than 20 international students　　with us next week，won′t they？

          ﹣Yes，they will．