Viết lại câu sao cho nghĩa không đổi: 1. Brenda never takes the trouble to help anyone Brenda never put ............................................. 2. As soon as the police officer left, the neighbors started shouting again No sooner ................................................. 3. In the end I had to get a lift with a colleague What .................................................................... 4. It was only when I got home that I realized I'd forgotten my bag Not until ....................................................................... 5. The guests didn't finally leave until after midnight It .......................................................... 6. If you're ever in the neighborhood, please drop in and see us Should ................................................................................ 7. Why didn't you tell me you were ill? You .........................................................