单项选择题
A. unsafe blood B. risky sexual encounters C. loss of blood during pregnancy related-illnesses D. blood transfusions
A. Two. B. Three. C. Four. D. Five.
A. Why her parents wanted to go to Gettysburg. B. Why her family’s vacation plans changed ten years ago. C. Where her family went for a vacation ten years ago. D. When her family went on their last vacation.