Tom apologized for _____ to inform me of the change in the plan. [ ]

He managed to become a great inventor ___ he left school at 16.

The dying old man opened his mouth as if____ something

Sally, I’m so worried about tomorrow’sexam that I can’t fall asleep.—_________. You’re sure to pass it.

He must have sensed that I _____ at him .He suddenly glanced at me and said quietly “Why are you staring at me like that ”