He used to smoke fifty cigarettes a day, didn't he?
举一反三
- Peter used to live in London, ______ A: usedn’t he B: B. wasn’t he C: didn’t he use D: didn’t he use to
- He used to get up at six in the morning, ____? A: used he B: did he C: didn't he D: should he
- He never used to swim in winter,____? A: did he B: didn’t he C: was he D: wasn’t he
- —Is your father still a doctor —______. A: Yes, he was B: No, but he used to be C: No, but he used to D: He didn't use to
- He tried to limit himself to ______ (smoke) ten cigarettes a day.