按要求转换句子，每空一词。
1. Would you like to answer the questions?（改为同义句）
________ ________ ________ answer the questions?
2. I can buy some snacks.（改为一般疑问句）
________ ________ buy __________ snacks?
3. I got to their home, but they weren't in.（改为同义句）
They weren't ________ ________when I got there.
4. He is going to look after his grandma. （改为同义句）
He is going to _________ _________ _________his grandma.
5. You need to exercise more to keep fit.（改为同义句）
You need to________ more ________to keep ________.
