must choose
Irregular verb: choose - chose- chosen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must choose
you must choose
she must choose
we must choose
you must choose
they must choose 	I must be choosing
you must be choosing
she must be choosing
we must be choosing
you must be choosing
they must be choosing	I must have chosen
you must have chosen
she must have chosen
we must have chosen
you must have chosen
they must have chosen	I must have been choosing
you must have been choosing
she must have been choosing
we must have been choosing
you must have been choosing
they must have been choosing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not choose
you must not choose
she must not choose
we must not choose
you must not choose
they must not choose 	I must not be choosing
you must not be choosing
she must not be choosing
we must not be choosing
you must not be choosing
they must not be choosing	I must not have chosen
you must not have chosen
she must not have chosen
we must not have chosen
you must not have chosen
they must not have chosen	I must not have been choosing
you must not have been choosing
she must not have been choosing
we must not have been choosing
you must not have been choosing
they must not have been choosing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I choose?
must you choose?
must she choose?
must we choose?
must you choose?
must they choose? 	must I be choosing?
must you be choosing?
must she be choosing?
must we be choosing?
must you be choosing?
must they be choosing? 	must I have chosen?
must you have chosen?
must she have chosen?
must we have chosen?
must you have chosen?
must they have chosen? 	must I have been choosing?
must you have been choosing?
must she have been choosing?
must we have been choosing?
must you have been choosing?
must they have been choosing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not choose?
must you not choose?
must she not choose?
must we not choose?
must you not choose?
must they not choose? 	must I not be choosing?
must you not be choosing?
must she not be choosing?
must we not be choosing?
must you not be choosing?
must they not be choosing? 	must I not have chosen?
must you not have chosen?
must she not have chosen?
must we not have chosen?
must you not have chosen?
must they not have chosen? 	must I not have been choosing?
must you not have been choosing?
must she not have been choosing?
must we not have been choosing?
must you not have been choosing?
must they not have been choosing?