3D printers are still _____ expensive for most of us ______ afford.
Can you hear _______ just now? It’s too noisy outside. A. what did he say B. what he says C. what he said
— I don’t think aliens can be found in space. —_____________. A. You are right B. That’s all right C. All right.
____________ beautiful house! It must be nice to live in. A. What B. What a C. How
—How do you_______ that in English? — It’s a trunk. A. speak B. say C. tell
You can borrow my dictionary __________you keep it clean. A. as much as B. as soon as C. as long as