来自牛中奇的问题
【动词填空Theteacherdideverythingtomakesurehe(understand)byhisclass.】
动词填空
Theteacherdideverythingtomakesurehe(understand)byhisclass.


【动词填空Theteacherdideverythingtomakesurehe(understand)byhisclass.】
动词填空
Theteacherdideverythingtomakesurehe(understand)byhisclass.
Theteacherdideverythingtomakesurehe(wasundersood)byhisclass.被动语态