The boys followed the marks that they ________, until finally they found their way back to the campsite.
—I’m thinking of the test tomorrow. I’m afraid I can’t pass this time.—__________! I’m sure you’ll make it.
Success in life doesn’t happen ______. It’s the result of devoting your time and energy to what you’ve set out to do.
Don’t try to cheat the taxman (税务人员); you’ll never ________it.
The reason why he was late is ______ he got up too late.
While crossing the street, please ________ for the coming cars.