Once an English doctor came back from Chine____Christmas holiday.A.at B.for C.in

Tom’s granny was once an English teacher .Tom’s granny （）（） be an English teacher . our school——（have）an English Day once a week,中间填什么? Tony once got f______ marks in an English test because he's so hardworking. Once an English doctor came back from Chine____Christmas holiday.A.at B.for C.in Brian had once had an English teacher,a guy named Perpich...(选自Hatchet) 其中两个had怎么理解? an opportunity knocks only once. The once owns an at an opportunity knocks only once. my grandfather often goes to the park on sundays 改为否定句i read english for half an hour an hour ecery day.主语改为maryhe takes a pano class once a week.用once a week提问 an English. And an English teacher是什么意思? Could you give some suggestion to CCTV-9?l think CCTV-9 should have a game show and should show an English film once a week. Mike is an English put on an English an English-Chinese 翻译 she had an english keep an English notebook 英译中：an English evening English is an i______subject