Заполните пропуски артиклями a, an, the

1) There is ... hamburger on the plate.

2) Give me .. apple, please.

3) Were are ... envelops?

4) ... Kremlin is in ... center of Moscow.

5) ... students are in the room.

6) Her husband is ... electrician.

7) In summer they will go to ... country on their holyday.