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ut soon after dark ___ home an hour later. ? A. arriving ? B. to arrive ? C. having arriving ? D. and arrived ? 借介詞或介詞短語 ? 10. I first met Lisa three years ago. She ___ at a radio shop at the time. ? A. has worked ? B. was working ? C. had been working ? D. had worked ? 11. He will have learned English for eight years by the time he ___ from the university next year. ? A. will graduate ? B. will have graduated ? C. graduates ? D. is to graduate ? 12. He’ll be an astronaut by the time he __