that all the risks should be calculated in advance. A: This is necessary B: Which is necessary C: That is necessary D: It is necessary

We consider _____ lessons should be previewed before the class. A: that it necessary B: it that necessary C: it necessary that D: necessary it that

I find ____________ to make some changes. A: it is quite necessary B: that is quite necessary C: it quite necessary D: quite necessary

If_____, we’ll continue our experiment after office hours. A: being necessary B: be necessary C: is necessary D: necessary

If_____,<br/>we’ll continue our experiment after office hours. A: being necessary B: be necessary C: is necessary D: necessary

We consider ____university students should do more reading during their spare time. A: necessary that B: necessary C: it necessary D: it necessary that

Fill in the blanks with the expressions given below. Change the form where necessary.be confined tostumble overshow offon probationas forrely on5. The hunger for liberty is strong, and it is not __________any time or place.

在学校克服害羞是必要的。 A: It is necessary to treat shyness at school. It is necessary to wipe out shyness at school. B: It is necessary to overcome shyness at school. C: It is necessary to deal shyness at school.

在学校克服害羞是必要的。 A: It is necessary to treat shyness at school. B: It is necessary to dealshyness at school. C: It is necessary to overcome shyness at school.

Rewrite the following, using be-subjunctive:It was necessary for him to leave immediately.It was necessary that he ____ immediately.