按要求改写下列句子,每空一词.
1. My sister was ill last week. (改为一般疑问句)
________ ________ sister ill last week?
2. They were very busy last Sunday. (改为否定句)
They ________ ________ very busy last Sunday.
3. Did you go to the bookstore yesterday? (作否定回答)
________, I ________.
4. Tom bought a lot of gifts. (改为一般疑问句)
________ Tom ________ a lot of gifts?
5. They watched a movie about sharks last night.(改为否定句)
They ________ ________ a movie about sharks last night.