Unit 7第D题详细解答过程和答案
1. a —What are these?
—They're ducks.
b —What are those?
—They're ducks.
2. a —What's this?
—It's an orange.
b —What are these?
—They're oranges.
3. a —What's that?
—It's a dog.
b —What are these?
—They're dogs.
4. a —What's this?
—It's a bird.
b —What are those?
—They're birds.
Unit 7第E题详细解答过程和答案
2. four pears
3. six oranges
4. five chickens
5. two cows
6. one/a duck