thereisapolicemaninthecorner

　　therehappenstobeabridgeovertheriver

　　therewerebigchangesinthevillageintheseyears

　　therewassomethingwrongwiththemachineboughtyesterday

　　thereisnotimetogothere

　　thereseemsalotofthingsforhimtodo

　　therestandsatoweronthemountaintop

　　thereisalotofraininourhometownthisyear

　　thereusedtobeabridgeovertheriver

　　thereisabasketballmatchbetweenclass3andclass4

　　1.拐角处站着一个警察(be)2.恰好河上有座桥(happen)3.最近几年,这个村庄发生了巨大的变化(be)4.昨天买的那台机器出了故障(be)5.没有时间/必要去那儿(be)6.他似乎有许多事情要做(seem)7.山顶上有一个塔(stand)8.今年,我们家乡雨水很多(be)9.过去这条河上有座桥(usedto)10.三班和四班将举行一场篮球赛(be)