Subject-verb agreement

Every - always singular
E.g.
1) Everyone in my class has his own notebook.
2) Every member of the committee attends the meeting every week.

All - depends on whether the noun is countable or not
Countable - singular
Uncountable - plural
E.g.
1) All the salt has been used up. (Salt is not countable, so the singular verb is used.)
2) All the pupils in my class are present today. (Pupils are countable, so the plural verb is used.)