53.Familarity with a wide range of idiomatic expressions, and the ability to use them appropriately____ are among the distinguishing marks of command of English like a native.
A) in context B) in practice C) in place D) in case
54.We are still____ things here, but I can't guarantee the situation will stay that way.
A) in memory of
B) in search of
C) in control of
D) in need of
55.Democratic government is a phrase that is notoriously hard to____.
A) credit B) defy C) modify D) define