1. Lan bought her new bike yesterday
=> Lan's new bike was bought yesterday.
2. She collects eggs yesterday( Đầu bài hơi kì nhá! Có /yesterday/ mà (collects) lại có "s")
=> Eggs were collected yesterday.
3. They are planting trees near their house
=> Trees are being planting near their house.
4.i make a cake
=> A cake is made.
5.Mr minh wtote an essay last month
=> An essay was wrote by Mr.Minh last month.
6.we are doing our tests
=> Our tests are being done.