My father warned me __________ going to the West Coast because it was crowded with tourists.
I would have come sooner but I ________ that they were waiting.
—Did you find the missing couple in the mountain yesterday?—No, but we ________ to get in touch with them ever since.
—Such a mistake could have been avoided. —Unfortunately, he ________ the mistake again and again.
The student didn’t pay any attention to the lecture; he ________ of something else.
At the time of the earthquake Jeff was still in his office. He ________ to finish a project before he left for the day.