The teacher____(wait)for me for ten minutes when i__(get)to school.Betty___(be)to the Great Wall several times since she ____(come)to China in 2002.The film____(begin)for half an hour.How long____he _____(borrow)the book?
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The teacher____(wait)for me for ten minutes when i__(get)to school.Betty___(be)to the Great Wall several times since she ____(come)to China in 2002.The film____(begin)for half an hour.How long____he _____(borrow)the book?
The teacher____(wait)for me for ten minutes when i__(get)to school.
Betty___(be)to the Great Wall several times since she ____(come)to China in 2002.The film____(begin)for half an hour.How long____he _____(borrow)the book?
The teacher____(wait)for me for ten minutes when i__(get)to school.Betty___(be)to the Great Wall several times since she ____(come)to China in 2002.The film____(begin)for half an hour.How long____he _____(borrow)the book?
The teacher_had waited___(wait)for me for ten minutes when i_got_(get)to school.
Betty_has been__(be)to the Great Wall several times since she came____(come)to China in 2002.
The film__has begun__(begin)for half an hour.
How long___has_he ___borrowed__(borrow)the book?
has been ; came; beginning; has; kept. 意思是Betty去过长城,所以用have been' since表过去,用came 动词后有个for,所以用动名词形式beginning has kept 拥有的意思 是持续的动作;而原来的词borrow表示短暂的动作,也就是瞬时动作,强调借的动作. 回答完毕~~