There must be ____ with the machine.
There are ____ to show that a new,different city is coming out of its dark past.
—What’s up? You look down.—I have piles of papers ________, but I type so slowly.
—I haven't got a mobile phone. —I think you should have . It's useful for you.
第一节:单项填空(共15小题;每小题1分,满分15分)Of all the subjects, I like ______ physics best because it gives us ______ useful knowledge of things in science. And I long to turn ______ scientist in the future.
It was how the disabled had managed to drag the child off the tracks the very moment when the train came______touched the audiences.