---Isn’t it time you went to bed, Mike?---I _____ painting all afternoon, so I have to finish my homework now.
“I haven't heard from Henry for a long time.” “What do you suppose_____ to him?”
Many countries, for example, Mexico and Japan, _____a lot of earthquakes.
Each of the students, hoping to pass the exam, _____the book.
He told me the news_____, believe it or not, he had earned $1 000 in a single day.
The research is so designed that once _____ nothing can be done to change it.