One needs to work hard to realize his or her dream，as the saying goes”Hard worksuccess”．

More than one student in our class__________to the Great Wall.

Which coat is _______, the black one or the gray one– The black one, of course.

_____ he is determined to do something, no one is able to make him ______.

It is these poisonous products ______can cause thesymptom of the flu, such as the headache and aching muscles.