Câu trả lời:

7

là duck nha

1 con vịt có 2 chân hỏi 15 con vịt có bn chân ???

Câu trả lời:

1. Vietnamese people / often / clean / decorate / houses / Tet.

Vietnamese people often clean and decorate their houses before Tet.

2. The air / the city / polluted / the air / the countryside.

The air in the city is more polluted than the air in the countryside.

3. It / very / interesting / take / boat trip / the Perfume River.

It’s very interesting to take a boat trip to the Perfume River.