This Opera _______ for 20 minutes.A.has begunThis Opera _______ for 20 minutes.A.has begun B.has startedC.has showed D.has been on

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This Opera _______ for 20 minutes.A.has begunThis Opera _______ for 20 minutes.A.has begun B.has startedC.has showed D.has been on
This Opera _______ for 20 minutes.A.has begun
This Opera _______ for 20 minutes.
A.has begun B.has started
C.has showed D.has been on

This Opera _______ for 20 minutes.A.has begunThis Opera _______ for 20 minutes.A.has begun B.has startedC.has showed D.has been on
D