The apartment caught fire last night.Fortunately,most of the

could 和 was/were able to 在语义上的最大不同在于：
could 表达了“能够” 但并未明确指出当时的情景；
be able to 表达了“能够”并且实际上反映了当时的情景
...people there could (get out in time)
...people there were able to (get out in time)
读读两句结尾的语气并非全然相同,因此这题正解应该是 D
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