问题
选择题
After 15 years in the USA, he has finally decided to _____ American citizen-ship.
A．care for
B．apply for
C．wait for
D．prepare for
答案
B
题目分析：A. care for喜爱，照顾，想要，B. apply for 申请，C. wait for等待，D. prepare for准备，句意：在美国15年后，他最后决定申请美国居民。选B。