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---I’ve told her many times, and she still forgot about it!
---I understand. It’s true that she___ be very forgetful sometimes.
A.canB.shouldC.ought toD.must
A
考查情态动词。can 可能,表示理论上的可能性;should,ought to应该;must
必须,一定。It’s true that she___ be very forgetful sometimes表示她有时可能真的比较健忘。表示理论上的可能性。所以选A。
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