—Can I help you?—Thanks. But I think the box is ______ heavy for you ______ carry.
Although they feel tired, _________they still go on working.
---You look very healthy. ________do you exercise? -----I exercise three times a week.
His mother wants him ________at home all day.Really? That’s terrible.
All my friends came to my birthday party. That _______me very happy.
---__________was your vacation? ---Very good.