—The pollution problem here seems to get more and more serious.--Yes. Something_____about it.

This printer is of good quality. If it ________ break down within the first year, we would repair it at our expense.

—A medical team was sent to Japan by air five hours ago.—So they ______________ have arrived by now. The flight usually takes four hours or so.

—_______ you read the words in English? —No, I can’t. They are too difficult for me.

He _______ have completed his work；otherwise, he wouldn’t be enjoying himself by the seaside.