—It’s time for lunch, Mum! I am hungry.—_____________________.
—What’s the weather like today?— . Good luck to you!
Eating _______ sweet food is not good for our health (健康).
I think ______ necessary ______ to take more exercise.
—They started working on the show two months ago, didn’t they?—___________. A lot of work needed to be finished before the show.
In the future,cars won’t be ______,and it’ll be _____ to travel everywhere by plane.A,cheap, expensive B. expensive ,expensiveC. cheap , cheap D. expensive,cheap