I said:"I am reading the book".

You said:"I had already visited London".

"I am going to travel"said Maria.

We said:"we visited Beijing"

I said that I was reading the book.

You said that you had already visited London.

Maria said that she was going to travel

We said that we had visited Beijing.

He said: "I will sleep early".

I asked: "what shall we eat for dinner?".

The teacher said to Tony:"you must work hard".

He said that he would sleep early.

I asked what we should eat for dinner.

The teacher said to Tony that he has to work hard

I said:"I am 25 last year".

We said:"we have exam next month".

You said: "I work here".

I said that I was 25 the previous year

We said that we had exam the following month.

You said that you worked there