— It is a pity that we have nothing to refer to when we come across new words.— I quite agree with you. There isn't any dictionary around when we need ______.
–How can I operate this machine? —Well, just refer to the _______.
He threw away all the ______ cigarettes, _______ to give up smoking for the sake of his health.
Mandy, ___ university student from Canada, teaches us ___ history of western art.
He always works hard, but__________, he didn't pass the exam.
The book_______well.