现学现用
1. Although I forgot how many shows in the opening ceremony, I really ______ (参加) them.
2. I regretted _______ the old man stand up. I decide to be a helpful boy in the future.
A. helping B. to help
C. not to help D. not helping
3. Not only my friends but also I ______ interested in football and Messy is our favorite star.
A. are B. am C. is D. /
