单项选择题
The doctor suggests that a person （） exercises every day if he wishes to be healthy.
A. does B. did C. do D. will do
单项选择题 "What's the matter with you, my dear" "I feel my heart （） fast."
单项选择题 Hawthorne differed from other writers （）he saw the potential consequences of all decisions resulting in either regeneration or punishment.
