I'm studying . . . . . . . . Economics this year.

Rohan's mother is . . . . . . . . teacher.

Mexico is . . . . . . . . large city.

London is on . . . . . . . . Thames.

. . . . . . . . Summer is . . . . . . . . hot season.

. . . . . . . . rich are not always kind.

I am . . . . . . . . English professor.

. . . . . . . . exercise he is writing is very easy.

Peter is on . . . . . . . . night duty. When I go to . . . . . . . . bed, he goes to . . . . . . . . work.