问题
选择题
28. The officer was very concerned ________ the latest development in the case because he was concerned ________ it.
A．about; in
B．for; about
C．with; for
D．in; with
答案
答案：A
28．A(解析：考查介词。be concerned about“关心”．be concerned in “涉及，与……有关”。选A。)