Помогите пожалуйста!!!Choose the correct answer. (??)Our teacher _____________ speak three

Помогите пожалуйста!!!

Choose the correct answer.
(??)Our teacher _____________ speak three languages.
(?)can
(?)must
(?)may

(??)They _____________ take every Friday off last year.
(?)were allowed to
(?)might
(?)could

(??)Your coat is quite new. You _____________ buy another one.
(?)mustn t
(?)needn t
(?)cant

(??)Id like _____________ play chess.
(?)to have to
(?)to be able to
(?)to can

(??)Students _____________ interrupt their teachers.
(?)cannot
(?)neednt
(?)mustnt

(??)He said he _____________ stay any longer.
(?)might not
(?)couldn t
(?)neednt

(??)I think Ill _____________ go and explain it to them.
(?)must
(?)have to
(?)can

(??)Are you sure youll _____________ get to the bottom of it?
(?)can
(?)be able to
(?)may

(??)The woman got up and Grayson _____________ see her face clearly before she switched off the light.
(?)might
(?)was able to
(?)could

(??)We _____________ not get the medicine and returned home without it.
(?)might
(?)had to
(?)could

(??)_____________ I have your book for a moment?
(?)Might
(?)Must
(?)May

(??)The boy _____________ drive my car if he passes his exam.
(?)may
(?)will be allowed to
(?)can