1.We went to the post office to send a letter.(改为一般疑问句)
          you          to the post office to send a letter??
2.The pandas need to eat bamboos.(对画线部分提问)?
                  the pandas need to eat??
3.It's important to learn English well.(改为同义句)?
        English well        very important.?
4.There are some animals in danger.(改为否定句)?
There                  animals in danger.?
5.We mustn't pollute rivers.(改为祈使句)?
                 rivers!?

1.I'd like to see Beijing Opera one day.(改为一般疑问句)?
         you        to see Beijing Opera one day??
2.We went to the theatre last night.(改为否定句)?
We                 to the theatre last night.?
3.It takes place in a house in old Beijing.(就画线部分提问)?
                        it take please??
4.Laoshe wrote Teahouse in 1957.(就画线部分提问)?
            Laoshe write Teahouse??
5.I think this film is very interesting. (就画线部分提问)?
      do you          of the film?