Don’t _______ too late, or you will feel tired in class.— I won’t, Dad.

The doctor’s treatment has worked marvels: the patient has completely．

Isn’t the trip boring— . I’d like to sleep at home instead of going out.

Observation, reason and experiment make up ______ we call the scientific method.

usic like hip hop can make a driver drive far more ______, braking harder and accelerating faster.