What’s the matter with you, Lucy?—After the long walk, my legs ___________ and I couldn’t go any farther.

So absorbed _______ in her work that she didn’t realize it was time that she picked up her daughter.

Look, these are ___________ bicycles. They are cool.

You keep on coughing What’s the matter? — Oh， I’ve got a cold Nothing serious， ____

erine,I have cleaned the room for you. ——Thanks,You it. I could manage it myself.