请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项。
( )21. —Look! More trees are being planted around the new building. What do you think of ________ natural surroundings here?
—Fantastic! Beyond ________ expression.
A. the; / B. the; the C. /; / D. the; an
( )22. Elizabeth Taylor, the Hollywood legend died at CedarsSinai Hospital ________ by her four children after being taken to hospital six weeks ago with heart failure.
A. to be surrounded B. having been surrounded
C. surrounded D. surrounding
( )23. ________ many countries in Latin America have been trying to reduce gaps in income, America has allowed inequality to grow.
A. While B. Since C. If D. Where
( )24. —Robert, I failed again!
—Don't worry, you'll get chosen for the
