I．单项选择：（共10题，每题1分，满分10分）
1. __________ at the cafeteria before, Tina didn’t want to eat there again.
A. To eat B. Eat C. Having eaten D. Eating
2. It rained heavily in the south, _______serous flooding in several provinces.
A. to cause B. causing C. having caused D. caused
