—What's the matter with you, Lucy?—After the long walk, my legs ___________ and I couldn't go any farther.
China’s new food law provides for a food recall system _______ producers have to stop production if their food isn’t up to standards.
Can you imagine that rats eat 40 to 50 times _______.
How long do you think _______ the computer company turns out a new product?
---Hello. May I speak to Bill, please? ---- ________.
--- Good morning. How much should I pay for these books ________ to Alabama? ---- Hm, about ten dollars.