must refuse
Regular verb: refuse - refused- refused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must refuse
you must refuse
she must refuse
we must refuse
you must refuse
they must refuse 	I must be refusing
you must be refusing
she must be refusing
we must be refusing
you must be refusing
they must be refusing	I must have refused
you must have refused
she must have refused
we must have refused
you must have refused
they must have refused	I must have been refusing
you must have been refusing
she must have been refusing
we must have been refusing
you must have been refusing
they must have been refusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't refuse
you mustn't refuse
she mustn't refuse
we mustn't refuse
you mustn't refuse
they mustn't refuse 	I mustn't be refusing
you mustn't be refusing
she mustn't be refusing
we mustn't be refusing
you mustn't be refusing
they mustn't be refusing	I mustn't have refused
you mustn't have refused
she mustn't have refused
we mustn't have refused
you mustn't have refused
they mustn't have refused	I mustn't have been refusing
you mustn't have been refusing
she mustn't have been refusing
we mustn't have been refusing
you mustn't have been refusing
they mustn't have been refusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I refuse?
must you refuse?
must she refuse?
must we refuse?
must you refuse?
must they refuse? 	must I be refusing?
must you be refusing?
must she be refusing?
must we be refusing?
must you be refusing?
must they be refusing? 	must I have refused?
must you have refused?
must she have refused?
must we have refused?
must you have refused?
must they have refused? 	must I have been refusing?
must you have been refusing?
must she have been refusing?
must we have been refusing?
must you have been refusing?
must they have been refusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I refuse?
mustn't you refuse?
mustn't she refuse?
mustn't we refuse?
mustn't you refuse?
mustn't they refuse? 	mustn't I be refusing?
mustn't you be refusing?
mustn't she be refusing?
mustn't we be refusing?
mustn't you be refusing?
mustn't they be refusing? 	mustn't I have refused?
mustn't you have refused?
mustn't she have refused?
mustn't we have refused?
mustn't you have refused?
mustn't they have refused? 	mustn't I have been refusing?
mustn't you have been refusing?
mustn't she have been refusing?
mustn't we have been refusing?
mustn't you have been refusing?
mustn't they have been refusing?