He began to take political science___only when he left school.
When Harry was at college, he ________ go to the reading room after supper every day.
Don't be angry with us. We ________ with you together, but we were busy with our final reports when you called in.
Your teacher ________ very angry at that moment because you talked back to her like that.
Thanks to my teacher's valuable help, otherwise I ________ my college entrance exam.
Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.