( ) is the defining properties of units like number， gender， case.

[单选题]( ) is the defining properties of units like number， gender， case.A.Parts o

[单选题]( ) is the defining properties of units like number， gender， case.A.Parts o

[单选题]( ) is the defining properties of units like number， gender， case.A.Parts o

[单选题]( ) is the defining properties of units like number， gender， case.A.Parts o

[单选题]( ) is the defining properties of units like number， gender， case.A.Parts o

The detective was completely ________ by the mysterious case.A. amusedB. frustra

[单选题]She is an [eternal]optimist in any case.A.happyB.cheerfulC.everlastingD.aim

[单选题]The governmenthas set up a working party to [look into] the case.A.investig

The chairman has also given his ____ （approve）for an investigation into the ca

[问答题]I would appreciate it if you would just let me deal with this case.