It was a long time before the Americans pletely from the shadow of the September 11th attack launched by the terrorists.
A. healed
B. improved
C. cured
D. treated
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(答案→)A. healed
B. improved
C. cured
D. treated
解析：考查动词：A. healed治愈，恢复，B. improved提高，C. cured治愈，D. treated治疗，句意：美国完全从恐怖主义者制造的9.11事件中恢复还要很长的时间。选A。