一、There's someboby at the door.____it be Jim?No,it ____be him.It'S just seven o'clock.It's early.
A.may ;can't B.will;won't C.may;mustn't D.must;may not
二、My cousin is 12 years old,and he ____ thirteen next year.
A.was going to be B.will C.is D.will be
三、Shall I tell Jim your good news?No,you___.He's known it already.
A.needn't B.wouldn't C.mustn't D.shouldn't
四、Will you please join us in the singing?Sorry,I ____.I have to study for math test.
A.mustn't B.can't C.needn't D.won't
五、Tom,you____throw all your toys on the floor!
A.wouldn't B.mustn't C.needn't D.may not