I certainly appreciate _____ us about thedelay in delivering the materials because we had planned to begin worktomorrow.

As ________matter of fact, _________ beauty of __________ nature there made an excellent impression on me.

You can find ________ become more difficultto see clean rivers in our city.

How could I thank you enough?—Don’t mention it. Any other man _____ that. [ ]

Even Tony’s six-year-old son asked him ______ smoking．