I must interpose you must interpose she must interpose we must interpose you must interpose they must interpose
V-ing form
I must be interposing you must be interposing she must be interposing we must be interposing you must be interposing they must be interposing
Perfect
I must have interposed you must have interposed she must have interposed we must have interposed you must have interposed they must have interposed
V-ing perfect
I must have been interposing you must have been interposing she must have been interposing we must have been interposing you must have been interposing they must have been interposing
Negation
Simple form
I must not interpose you must not interpose she must not interpose we must not interpose you must not interpose they must not interpose
V-ing form
I must not be interposing you must not be interposing she must not be interposing we must not be interposing you must not be interposing they must not be interposing
Perfect
I must not have interposed you must not have interposed she must not have interposed we must not have interposed you must not have interposed they must not have interposed
V-ing perfect
I must not have been interposing you must not have been interposing she must not have been interposing we must not have been interposing you must not have been interposing they must not have been interposing
Interrogative form
Simple form
must I interpose? must you interpose? must she interpose? must we interpose? must you interpose? must they interpose?
V-ing form
must I be interposing? must you be interposing? must she be interposing? must we be interposing? must you be interposing? must they be interposing?
Perfect
must I have interposed? must you have interposed? must she have interposed? must we have interposed? must you have interposed? must they have interposed?
V-ing perfect
must I have been interposing? must you have been interposing? must she have been interposing? must we have been interposing? must you have been interposing? must they have been interposing?
Interro-negative form
Simple form
must I not interpose? must you not interpose? must she not interpose? must we not interpose? must you not interpose? must they not interpose?
V-ing form
must I not be interposing? must you not be interposing? must she not be interposing? must we not be interposing? must you not be interposing? must they not be interposing?
Perfect
must I not have interposed? must you not have interposed? must she not have interposed? must we not have interposed? must you not have interposed? must they not have interposed?
V-ing perfect
must I not have been interposing? must you not have been interposing? must she not have been interposing? must we not have been interposing? must you not have been interposing? must they not have been interposing?