把下列英语句子改成被动语态：

题目

把下列英语句子改成被动语态：
1.My father is repairing my bike.
2.I have found my pen this morning.
3.She has finished her homework.
4.The girl broke the vase just now.
5.Mother was cooking dinner yesterday evening.
6.They had made a beautiful cake for her.
7.I will write a letter tomorrow.
8.I can't answer the questions.
9.We keep the piano in the living room.
10.He cut down the trees in the garden.

答案

1.My bike is being repaired by my father.
2.My pen has been found (by me)this morning.
3.Her homework has been finished by her.
4.The vase was broken by the girl just now.
5.Dinner was being cooked by mother yesterday evening.
6.A beautiful cake has been made by them for her.
7.A letter will be written by me tomorrow.
8.The questions can't be answered by me.
9.The piano is kept in the living room by us.
10.The trees was cut down by him in the garden.