1)the project have been finished 

2)their work have been finished  since the morning

3)that novel has been translated  into Vietnamese by A scholar

4)that car has been used  by Mr.Lam for 10 years

5)HCM city has been visited by Lan since last year

6) How long has been English learned ?

7)Has been that cake made  by Mai for 2 hours?

8) my work hasn't been finished  yet.

9)lots of exercises have been given by My teacher

10)Has been HCm city ever visited ?