Excuse me ,where's the theatre?Excusw me,( how ) can I ( go ) ( to ) the theatre?
It's best to go there by bus.You ( had ） （better ） take （ the） （ bus ）to go there.
I sit behind Wu Dong.Wu dong sits ( in ) ( front ) ( of ) me.
Please don 't close the door.Please ( keep ) the door ( open ).
Please take the third turning on the left.Please ( turn ) ( left )at the third crossing.
问题补充：
It's best to go there by bus.You ( ） （ ） take （ ） （ ）to go there.