You must have waited here for a long time, __________?

Some students go to school without _______ breakfast.

.—How do you like the address Hu Jintaodelivered at the Asian APEC in 2009—Great. Itakethat he spoke of the physical securitymeasures.

There are emergency exits in both towers of the hotel, ______ on the other side opposite the elevators.

下面语段中加线的词语，使用不恰当的一项是（ ）石钟山上那些错落有致的奇石以及记载着天下兴衰的石刻令人叹为观止。石钟山的名字也叫得奇，围绕这一名字的由来，人们开展了激烈的争论。卷入这场争论的，有名扬四海的文人墨客，也有戎马倥偬的赳赳武夫，还有名不见经传的山野村人。无论结果如何，不容置喙的是，石钟山因此更加有名了。