The author of the report is well _____ with the problems in the hospital because he has been working there for many years.
A.acquainted
B.informed
C.enlightened
D.advised
网友回答
A解析 be acquainted with熟悉，be well informed of(about)对......消息灵通。可见，此题中应用acquainted,因为后面地介词是with.