句型转换。

1. They gave the food to the animals once a day.(对画线部分提问)

    ______  ______ did they give the food to the animals?

2. I am not against building a new hotel in the centre of our city.(改为同义句)

    I ______ ______ build a new hotel in the centre of our city.

3. She takes care of young animals in the zoo.(改为同义句)

    She______ the young animals in the zoo.

4. We planted many trees along the river.(改为被动语态)

    Many trees______ ______ along the river.

5. He has never seen a kangaroo before.(改为反意疑问句)

    He has never seen a kangaroo before,______?