He cut off the electricity immediately hefound the dangerous situation, thus ____ a fire accident.

With so many people ____ the Internet, it is difficult to see online movies at the same time. [ ]

Thank you your help, Tom.—

I wonder if the work can be completed in a month.— The work is progressing________schedule and should be completed within three weeks.[ ]

Did you find the missing couple in the mountain yesterday?—No, but we ________ to get in touch with them ever since