1)"Where is THE yellow tie?" "Its on THE bed."
2) I'm AN engineer.
3)"Where is THE white exercise-book?" "Its on THE table."
4)"Where is your friend?" "He's in THE room"
5) Jane is A factory worker, and Ben is AN engineer. Jack is AN engineer, too. Ben and Jack are __ engineers. They are __ good engineers.
6. Peter is A pioneer. He's A good pupil.
7. Mary is A doctor. Her friend Kate is A doctor, too.
8. Moscow is A city.
9. “Bobby is A baby. Whose son is he?" “He’s their son.”
10. Open your books at __ page ten and read __ Text Nine, please.
Where did (the) nuclear pollution happen?