—I think the man over there must be Bob.
-- It _______ be him. He has ______ to Australia.
A.can’t, gone | B.can’t, been | C.may not, been | D.mustn’t, gone |
—I think the man over there must be Bob.
-- It _______ be him. He has ______ to Australia.
A.can’t, gone | B.can’t, been | C.may not, been | D.mustn’t, gone |