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,______?