Why was Mr. Liu thundering in the classroom yesterday?— A student’s interrupting his speech _____the burst of his anger.

When shall we have a holiday?— Oh, forget it. Now there are many things _____ in the company. [ ]

Did Professor Wang say anything that _____ you especially—It was really boring. Actually I slept through his speech.

_______ about the economic crisis that he decided to look for more information about it.

Listen, the country music ________so sweet.