When do you think we can meet again— Well, anytime you feel like ______

Nobody knows why the boy can tell what’swritten on the paper in another room without looking at it It really _______ explanation

Determination is a kind of quality—and that is __________ it takes to do anything well.

the college entrance exam is drawing near, study shouldn’t take up all of your time. It’s important to some time for relaxation and hobbies as well.

With sufficient scientific information amanned trip to Mars should be _____.