1. Yesterday, my sister ... dinner
A. preparing, B. prepares, C. prepared, D. was preparing
2. This is one of the most... entertainment formats in the UK. It attracts a significantly huge number of audience
A. successfully, B. success, C. succeed, D. successful
3. While Tom... games in his room, his friend...him.
A. was playing/phoned, B. was playing/phones, C. were play/phoned, D. were playing/phoned