must approve
Regular verb: approve - approved- approved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must approve
you must approve
he must approve
we must approve
you must approve
they must approve 	I must be approving
you must be approving
he must be approving
we must be approving
you must be approving
they must be approving	I must have approved
you must have approved
he must have approved
we must have approved
you must have approved
they must have approved	I must have been approving
you must have been approving
he must have been approving
we must have been approving
you must have been approving
they must have been approving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not approve
you must not approve
he must not approve
we must not approve
you must not approve
they must not approve 	I must not be approving
you must not be approving
he must not be approving
we must not be approving
you must not be approving
they must not be approving	I must not have approved
you must not have approved
he must not have approved
we must not have approved
you must not have approved
they must not have approved	I must not have been approving
you must not have been approving
he must not have been approving
we must not have been approving
you must not have been approving
they must not have been approving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I approve?
must you approve?
must he approve?
must we approve?
must you approve?
must they approve? 	must I be approving?
must you be approving?
must he be approving?
must we be approving?
must you be approving?
must they be approving? 	must I have approved?
must you have approved?
must he have approved?
must we have approved?
must you have approved?
must they have approved? 	must I have been approving?
must you have been approving?
must he have been approving?
must we have been approving?
must you have been approving?
must they have been approving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not approve?
must you not approve?
must he not approve?
must we not approve?
must you not approve?
must they not approve? 	must I not be approving?
must you not be approving?
must he not be approving?
must we not be approving?
must you not be approving?
must they not be approving? 	must I not have approved?
must you not have approved?
must he not have approved?
must we not have approved?
must you not have approved?
must they not have approved? 	must I not have been approving?
must you not have been approving?
must he not have been approving?
must we not have been approving?
must you not have been approving?
must they not have been approving?