问题
选择题
Thomas ________ the army for two years, so he misses his mother very much.[ ]
A. has joined
B. has taken part in
C. has been in
答案
答案：C
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Thomas ________ the army for two years, so he misses his mother very much.[ ]
A. has joined
B. has taken part in
C. has been in
答案：C