英语的宾语从句16.We think that it’s important for us to learn Engli

英语的宾语从句
16.We think that it’s important for us to learn English well.
We think _________ _________ _________ __________ English well.
17.I don’t know why they are standing there.
I don’t know _________ they are standing there _________.
18.I wish I were a bird.I wish _________ _________ a bird.