Question

159. Выразите удивление: Неужели?
1. They can sing.
2. They are clowns.
3. They sing at school.
4. They have got Art at school.
5. They are eight.
6. They take eight cakes.
7. They can take eight cakes.
8. They have got eight cakes.
9. They see a bird.
10. They drink coffee.
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Answer 1

везде должен быть ответь "are them?"

потому что везде множественное число