“Isn’t it about time you _____ to do morning exercises?” “Yes, it is. Would you like to join us?”
He decided that he would drive all the way home instead of __________ at a hotel for the night.
— Happy birthday!—Thank you! It's the best present I __________ for.
Most American children go to state schools, but the private schools __________ be very good.
Since nobody gave him any help, he __________ have done the research on his own.
—Why are your eyes so red? You __________ have slept well last night.—Yeah, I stayed up late writing a report.