Question

Do you think he is lazy？” “I _____ so once, but I don’t now.”

A．may have thought	B．can have thought
C．may think	D．might think

Answer 1

A

考查虚拟语气。句意：你认为他懒吗？我过去可能这样想，但是现在不这样想了。“may+have+done”表示对发生过的事情的推测，意思是“可能已经”或“也许已经”，用于肯定句中。故选A。