It is 4：30 pm． Ben and Leon _______ their work， so they are playing chess now．（ ）
A．finishB．finished
C．have finishedD．will finish
It is 4：30 pm． Ben and Leon _______ their work， so they are playing chess now．（ ）
A．finishB．finished
C．have finishedD．will finish
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