试题题干
Fill in each of the following blanks with a word or an expression.
In English, nasal vowels occur only before 
, and oral vowels before oral consonants or at the end of words.
参考答案
试题解析
在英语中，鼻音元音只出现于鼻音辅音之前，在口音辅音前或词尾结束时才出现口腔元音。
Fill in each of the following blanks with a word or an expression.
In English, nasal vowels occur only before , and oral vowels before oral consonants or at the end of words.
在英语中，鼻音元音只出现于鼻音辅音之前，在口音辅音前或词尾结束时才出现口腔元音。