Howdid it _____ that you made such a silly mistake—I myself haven’t figured it out yet

had forgotten the date of that important battle so I _____ a history book.

The boy has a cold and the doctor asks him ________ more water.

.— We weren’t able to any new suggestions.— Don’t worry. We’ll try to figure it out.

It’s_________for an employee of this company to work seventy” hours a week since the competition is fierce in the industry.