Question

test11.make sentences passive. 1the students passed the exam last friday 2.many people play football3. he caught the last train 4.canada built many hydro-electric station some years ago

Answer 1

1 The exam was passed by the students last friday. 
2 Football is played by many people.
3 The last train was caught by him..
4 Many hydro-electric stations were built by Canada some years ago.