单项选择题
John usually asks（）more questions in class than his classmates.
A. far B. many C. a great deal D. lot
单项选择题 （）have we seen such an effective actor as he has proven himself to be.
单项选择题 They concentrated their efforts on（）products of high quality.
单项选择题 Having decided to rent a flat, we（）contacting all the accommodation agencies in the city.
