13. It is said that Mr. Liu isn’t happy about our work, which _______ yesterday.
(A)should be done
(B)should have been done
(C)must be done
(D)will have been done
詳解 (共 4 筆)
未解鎖
據說劉先生對我們的工作並不滿意，這是...
未解鎖
must：must用於推測, 多針對過去...
未解鎖
Should have: 用在應該/可能...
未解鎖
should + have + pp 有...
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