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用适当形式填空:1Ioftenseehim(walk)aftersupper.2Whydidyoukeepme(wait)foralongtim...用适当形式填空:1Ioftenseehim(walk)aftersupper.2Whydidyoukeepme(wait)foralongtime?3Theworkersaremade(work)12hoursa

题目详情
用适当形式填空:1I often see him (walk) after supper.2 Why did you keep me(wait )for a long tim...
用适当形式填空:1I often see him (walk) after supper.2 Why did you keep me(wait )for a long time?3The workers are made(work) 12 hours a day.4 The children were heard(sing) in their dormitory last night.
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答案和解析
1.walk 所用结构式see sb do sth,看见某人做某事的全过程或经常做某事,
see sb.doing sth 是看见某人正在做某事.
2 waiting
3.to work
4.singing