— Can I help you, madam?— Yes, I bought this air conditioner here yesterday, but it _____ now. 

You’d better have your bike ________, or it’ll get you into trouble.

 --- Hurry up! We have to get going. --- Just a minute. I ________the paper.

—What’s that noise, John?—Sorry, Linda．I forgot to tell you．The school library ______．

To be honest, I didn’t______ him at first sight. About an hour later, I remembered him.