Change the direct speech into reported speech.

Fred said: "I have invented a new computer program". - Fred said that
.
Mary said: "I will help my sister." - Mary said that
.
She said, "Kent has visited many countries in western Europe." - She said that
.
She said: "I live in a big apartment." - She said that
.
My dad said, "I am working in the garden." - My dad said that
.
The teacher said, "You have to do this exercise." - The teacher said to me that
.
My sister said: "I found my passport." - My sister said that
.
Mr. Numb said: "I don’t like pork." - Mr. Numb said that
.
She said, "You must help me!" - She said to me that
.
My friend said, "I can solve the test". - My friend said that

Ответ:

Fred said: "I have invented a new computer program". - Fred said that

he had invented a new computer program.

Mary said: "I will help my sister." - Mary said that  she would help her sister.

She said, "Kent has visited many countries in western Europe." - She said that  Kent had visited many countries in western Europe.

She said: "I live in a big apartment." - She said that  she lived in a big apartment.

My dad said, "I am working in the garden." - My dad said that  he was working in the garden.

The teacher said, "You have to do this exercise." - The teacher said to me that  he had to do that exercise.

My sister said: "I found my passport." - My sister said that  she had found her passport.

Mr. Numb said: "I don’t like pork." - Mr. Numb said that  he didn't like pork.

She said, "You must help me!" - She said to me that  I had to help her.

My friend said, "I can solve the test". - My friend said that he could solve the test.

Объяснение:

Когда мы меняем прямую речь на косвенную, то мы должны поменять глаголы на шаг назад в прошлое, например, can - could, must - had to, found - had found, а также местоимения такие как this на that, так как вещь на которую мы указываем, может поменяться или вовсе исчезнуть с течением времени, к тому моменту когда мы о ней говорим.