Keep up good state of mind even if you _____ fail plenty of times.

25. – Tom, it's too late. Our son ________ be back.– Don't be anxious. I dare say he ________ have some extra work to do.

 —I’m thinking of losing weight these days.—Oh, you_____be out of your mind. You’re 50 kilograms at the most!

(2013·宁夏银川一中高三第四次考试)It was terrible. The car ________ break down just as we were going on our holiday.

If the firefighters ________ in time, the fire would have resulted in many deaths in the hotel.