I must fluoridate you must fluoridate he must fluoridate we must fluoridate you must fluoridate they must fluoridate
V-ing form
I must be fluoridating you must be fluoridating he must be fluoridating we must be fluoridating you must be fluoridating they must be fluoridating
Perfect
I must have fluoridated you must have fluoridated he must have fluoridated we must have fluoridated you must have fluoridated they must have fluoridated
V-ing perfect
I must have been fluoridating you must have been fluoridating he must have been fluoridating we must have been fluoridating you must have been fluoridating they must have been fluoridating
Negation
Simple form
I must not fluoridate you must not fluoridate he must not fluoridate we must not fluoridate you must not fluoridate they must not fluoridate
V-ing form
I must not be fluoridating you must not be fluoridating he must not be fluoridating we must not be fluoridating you must not be fluoridating they must not be fluoridating
Perfect
I must not have fluoridated you must not have fluoridated he must not have fluoridated we must not have fluoridated you must not have fluoridated they must not have fluoridated
V-ing perfect
I must not have been fluoridating you must not have been fluoridating he must not have been fluoridating we must not have been fluoridating you must not have been fluoridating they must not have been fluoridating
Interrogative form
Simple form
must I fluoridate? must you fluoridate? must he fluoridate? must we fluoridate? must you fluoridate? must they fluoridate?
V-ing form
must I be fluoridating? must you be fluoridating? must he be fluoridating? must we be fluoridating? must you be fluoridating? must they be fluoridating?
Perfect
must I have fluoridated? must you have fluoridated? must he have fluoridated? must we have fluoridated? must you have fluoridated? must they have fluoridated?
V-ing perfect
must I have been fluoridating? must you have been fluoridating? must he have been fluoridating? must we have been fluoridating? must you have been fluoridating? must they have been fluoridating?
Interro-negative form
Simple form
must I not fluoridate? must you not fluoridate? must he not fluoridate? must we not fluoridate? must you not fluoridate? must they not fluoridate?
V-ing form
must I not be fluoridating? must you not be fluoridating? must he not be fluoridating? must we not be fluoridating? must you not be fluoridating? must they not be fluoridating?
Perfect
must I not have fluoridated? must you not have fluoridated? must he not have fluoridated? must we not have fluoridated? must you not have fluoridated? must they not have fluoridated?
V-ing perfect
must I not have been fluoridating? must you not have been fluoridating? must he not have been fluoridating? must we not have been fluoridating? must you not have been fluoridating? must they not have been fluoridating?