50、The thief tried to open the locked door but _____.A) in n

50、The thief tried to open the locked door but _____.A) in n The thief tried to open the locked door but _________. He tried to open the locked door,but he ___(失败). We need ( )to open the locked door Paul tried to open the locked door and ( )(打开了) it but l door tried open failed to the连词成 she----to open the door but failed a.try b.tries c.tried d.i i tried ____ (open ) the door ,but i failed . He tried the door very hard,but it ______ open I tried opening the back door,but it was locked,too.其中lock为什 They tried to silence the _____ audience but in vain. paul tried to use a knife to open the door.(改同义句）