1.Lesson Two was not taught last week.
2.Ten birds were seen in the tree just now.
（in the tree:在树上,尤指外来的东西,如人或动物； on the tree:专指生长在树上的事物,如树叶、果实等）
3.The village was burnt down yesterday.
4.Fifty books were brought into the class.
(bring指“带来”；take指“带去、带走”)
5.That car was stolen last Wednesday.