题目内容：

语法填空

Last year I won a prize in a competition． I1.（award） a journey to AD 3008． Worried about the journey， I was nervous and2.（certain） at first． Luckily， my friend and guide， Wang Ping， was very understanding and gave me some green tablets 3.helped a lot． Well-known for their expertise， his parents' company，4.（call） "Future Tours"， transported me safely into the future in a time capsule．

I can still remember5.moment when I lay relaxed in the comfortable seats after a calming drink as the capsule swung 6.（gentle） sideways． During the journey， the air seemed thin as if7.（it） combination of gasses had little oxygen left． The new surroundings were difficult for me to tolerate， so Wang Ping suggested me putting on a mask which made me feel much better． In no time， I was back on my feet again．

When8.（arrive） at a strange-looking house， I was shown by Wang Ping into a large， bright clean room， whose wall was made9.trees． Later I found that their10.（leaf） provided the room with much-needed oxygen． After a while Wang Ping left． I had a brief meal and a hot bath． Exhausted， I slid into bed and fell fast asleep．