Students used to_____ information from newspapers or magazines, but now they are used to ______ for it on the Internet directly.

It's dangerous to let the children who are _____ go swimming in the river. 

There is no doubt ________ those who work hard will succeed sooner or later.

As we grow up, it always _______ that after we give something up, we gain something new in its place.

You should do the things worth ____, and if you have difficulty _____ them, you can turn to your family.