You look tired. What’s the matter?—I cared for my sick daughter all day.
Jeremy Lin, ______NBA star, used to be _____unknown player in New York Knicks.
. — How about my fish? — _____. Cooking is really your field.
Things are ________ on Mars ________ on Earth because of the different gravity.
Be careful . You _______ cross the road when the traffic light is red . The traffic is heavy at this time of day .