Last month i had an opportunity ____ at the local hospital.为什么上空填的是Last month i had an opportunity ____ at the local hospital.为什么上空填的是volunteering,而不用to volunteer不要复制粘贴,百度上的我都看过了

I had a holiday last month last month划线提问 an experience Linda month had amusing last造句 her teacher had an accident last month 同义句转换 改错1.I met an old friend sometimes last month Last month i had an opportunity ____ at the local hospital.为什么上空填的是Last month i had an opportunity ____ at the local hospital.为什么上空填的是volunteering,而不用to volunteer不要复制粘贴,百度上的我都看过了 i had an exciting party party last weekend.3Q 同义句转换 I had an unusual accident last weekend. I had an unusual e------- last summer vacation.填空 I had an (不寻常的)experience last night I remember m______Susan last month. have an opportunity to do与doing的区别?Last month i had an opportunity ____ at the local hospital.为什么上空填的是volunteering,而不用to volunteer Last year I went on an eitht-month trip around the world.怎么翻译? I t___to Australia last month.It was an exciting trip.这里填什么 I ______there for three days with my parents last month 答案是was 为什么不能用过去完成时had been Last night was the most （）（enjoy）time I have had in the past month急 过去完成时求帮造句,1.By the time ...,he had already ...2.The movie had ...by the time we ...3.In (year),I ...Prior to that time,I had ...4.Last (month),I ...Before that,I had never... uncle jake had a 【 】(please) trip last month last month,i received an invitation to visit a frienf in her new high-rise flat同义句