[单选题]PartII.PracticalEnglish400（英语口语400句，30%）SectionAVocabularyandStructure(1*20=20%)Directions:Choosethebestanswertocompletethesentences,questionsordialogues.ThenmarkthecorrespondingletteronAnswerSheet.11.–Whatareyoudoing?–_________________.
A
I'm playing computer games.
B
I have been there before.
