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485.Is there anything wrong,Bob?You look sad.
Oh,nothing much.In fact,I _______ of my friends back home.
A.have just thought
B.was just thinking
C.would just think
D.will just be thinking
486.I don't suppose the police know who did it.
Well,surprisingly they do.A man has been arrested and _____ now.
A.has been questioned
B.is being questioned
C.is questioning
D.has questioned
