—Excuse me, could you tell me ________ a book about music? —Sure. They are on the second floor. A. where can I buy B. where I can buy C. when I can buy D when I can buy
- I'm sorry I made a mistake! -______. Nobody is perfect.
If you ______ smoke, please go outside.
Jim was watching a late night film______ the television went blank.
- Your e-mail address again? I ______ quite catch it. - It's Lily@126.com.
Health experts believe that even a little exercise is better than______ at all.