变形:It is said that John has broken off his_____(engage)to Mary.2.It is necessary that he _____(return)the dictionary immediately.

问题描述:

变形:It is said that John has broken off his_____(engage)to Mary.
2.It is necessary that he _____(return)the dictionary immediately.

1.engagement
听说约翰解除了跟玛丽的婚约.
2.return
他必须立即归还这本字典.
句中有necessary,因此从句要使用虚拟语气,动词应为原形.