Do you think he is lazy？” “I _____ so once, but I don’t now.”
A．may have thoughtB．can have thought
C．may thinkD．might think
A
考查虛擬語(yǔ)氣。句意：你認(rèn)為他懶嗎？我過(guò)去可能這樣想，但是現(xiàn)在不這樣想了�！癿ay+have+done”表示對(duì)發(fā)生過(guò)的事情的推測(cè)，意思是“可能已經(jīng)”或“也許已經(jīng)”，用于肯定句中。故選A。
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