Điền a; an; the vào chỗ trống

điền a,an,the vào chỗ trống: 1.This is ... Atlantic Ocean , 2. I can't play ... piano, 3. She is... teacher, 4. We want to build... good community, 5. Where's... post office , 6. There's ... bank near the school, 7. I need... egg and some milk for the food