-
最佳答案:It run but didn't fly.祝您学习进步,更上一层楼!请记得采纳,谢谢!(*^__^*)
-
最佳答案:was were had did didn't
-
最佳答案:drove did had standed
-
最佳答案:does为do的第三人称单数形式,do的过去式为did,改成过去式就是My mother usually did the housework at weeken
-
最佳答案:did danced worried askedtasted ate drew putthrew kicked passed didgave sat sang
-
最佳答案:过去式:He did exercise.现在进行时:He is doing exercise.
-
最佳答案:Did this kind of dinosaur eat meat and drink water long long ago?
-
最佳答案:was/weredidaskeddrewbroughtdug
-
最佳答案:did did came went were ate bought was was had gave droped played run
-
最佳答案:般过去式第三人称单数形式否定句是加didn't如:She didn't fihinsh doing her homework yesterday.而一般现在时,