It is necessary that the students ____ more excercises to do.
A
【句意】学生们有必要做更多的练习。
【难点】虚拟语气可以用于主语从句中，常用的句型为：It+is(was)+形容词that…，主语从句中的谓语用(should)+v.的表达形式。
HowI_____Icouldliveonthemoon.
By local doctors and nurses, we hope more people.
Mr. Green is used to_________ two apples after lunch every day.
Withonelegbrokeninthatcaraccident,hecannotevenwalk,____run.
Her ____ was held at the local church.
