How tired he looks!—Yes. He spends____time____his work.[ ]

I want to know more __________about how to use this word.—You can look it up in the dictionary.

The windows are broken and need to be repaired.– I think so. They can hardlythe cold now.

You’re late! You were ____to be here an hour ago.— Sorry, Mr. Hu.

What do you think of your host family, Jim?—Great. They try ________ best to make me feel at home.