Rewrite the sentences using Repoted Speech I have seen an active volcanoMary told Helen​

I was offerd a cup of tea by them.
Examinations are taken at the end of each term.
The birthday cake was baked by mother
America was discored in 1492 by Columbus.
I was asked to read a story by the children.
This story was written by George Simenon.
We were given a form to fill in by the boss.
I was taught to ride a bicycle by father.
He was told to lie in bed for three days by the doctor.
I  will be served breakfast in five minutes by the waiter.
English is spoken in many countries.
I shall be given a cup of coffee if I want.
The shop is closed at 5.