1. You should tell him the truth.（改为否定句）
You ________ _________ him the truth.
2. He must do his homework every night. （改为一般疑问句）
________ ________ ________ his homework every night?
3. Mary is feeding her parrot. （改为同义句）
Mary is giving _______ ________ her parrot.
4. You can feed the bird some rice. （改为同义句）
You can feed some rice ________ the bird.