It was not until 3 days later that the boy came back to life and explained to the police what_______ to him.
22. Victor apologized for________to inform me of the change in the plan. his being not able B. him not to be able C. his not being able D. him to be not able
21. He decided not to attend her birthday party________he had been invited to.
20. _______, English is one of the most important subjects.
19. At that time, people_____early in the morning in winter, and coal them warm.
18. When Tom woke up, he found himself_______in bed, with his bag beside him.