题目内容
The words such as “smog”， and “motel” are __________.
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Morphologcial changes can involve __________.
By analogy to the plural formation of the word “dog-s”, speakers started saying “cows” as the plural of “cow” instead of the earlier plural “kine”. This is the case of _________.
The most dramatic morphological loss concerns the loss of ________.
In Old and Middle English, both /k/ and /n/ in the word “knight” were pronounced, but in modern English, /k/ in the sound /kn-/ clusters was not pronounced. This phenomenon is known as ________.
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