must opt
Regular verb: opt - opted- opted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must opt
you must opt
he must opt
we must opt
you must opt
they must opt 	I must be opting
you must be opting
he must be opting
we must be opting
you must be opting
they must be opting	I must have opted
you must have opted
he must have opted
we must have opted
you must have opted
they must have opted	I must have been opting
you must have been opting
he must have been opting
we must have been opting
you must have been opting
they must have been opting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not opt
you must not opt
he must not opt
we must not opt
you must not opt
they must not opt 	I must not be opting
you must not be opting
he must not be opting
we must not be opting
you must not be opting
they must not be opting	I must not have opted
you must not have opted
he must not have opted
we must not have opted
you must not have opted
they must not have opted	I must not have been opting
you must not have been opting
he must not have been opting
we must not have been opting
you must not have been opting
they must not have been opting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I opt?
must you opt?
must he opt?
must we opt?
must you opt?
must they opt? 	must I be opting?
must you be opting?
must he be opting?
must we be opting?
must you be opting?
must they be opting? 	must I have opted?
must you have opted?
must he have opted?
must we have opted?
must you have opted?
must they have opted? 	must I have been opting?
must you have been opting?
must he have been opting?
must we have been opting?
must you have been opting?
must they have been opting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not opt?
must you not opt?
must he not opt?
must we not opt?
must you not opt?
must they not opt? 	must I not be opting?
must you not be opting?
must he not be opting?
must we not be opting?
must you not be opting?
must they not be opting? 	must I not have opted?
must you not have opted?
must he not have opted?
must we not have opted?
must you not have opted?
must they not have opted? 	must I not have been opting?
must you not have been opting?
must he not have been opting?
must we not have been opting?
must you not have been opting?
must they not have been opting?