4. I'm afraid we do not have ................................ Option but to complain to the union.
(A) any
(B) each
(C) some
(D) a lot
5. Jane and her new assistant attended the conference and ................ were amazed at the huge turnout.
(A) either
(B) each
(C) both
(D) any
6. Unfortunately we cannot include ...................... in the list of presenters.
(A) they
(B) their
(C) them
(D) themselves