1 this car was bought last summer

2 a lot of cakes were made by my mother last tet festival

3 I was given a new pen last tuesday

4 the picture wasn't painted by hai

5 the windows weren't broken by the children yesterday afternoon

6 was the dress made for herself by hoa?

7 was this castle built a long time ago?

8 the project of new building has just been finished

9 all the books have already been sold

10 the road to our hometown hasn't been widen

11 hoa's lesson hasn't been prepared by hoa yet

12 has you assignment of history been completed?

13 have you been told the news of alien's appearance by nam?

14 your test should be done carefully

15 new power musn't be found for the future years

16 the math problem can't be solved by the students