. They were so______on their chess game that the sun had long set before they called it a day.
举一反三
- The children, ______ had played the whole day long, were worn out.
- The weather ______ so bad, we had to put the game off. A: was B: is C: were D: being
- If she _____ me the day before yesterday, she would have gotten a place to stay. A: had called B: called C: have called D: call
- He had five children to raise, ______ he had to work long hours every day. A: as B: for C: so D: because
- Long before the _________________ set foot on American soil, the _________________________ had been living there. (20,000-30,000 years ago)