Câu hỏi :

When do they say "Welcome"?

A. They say "Welcome" when they play.

B. They say "Welcome" when they sleep.

C. They say "Welcome" when they sing.

D. They say "Welcome" when a dolphin comes back to the school.

* Đáp án

D

* Hướng dẫn giải

They say "Welcome" when a dolphin comes back to the school. 

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