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These students have a toothache.改为一般疑问句

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These students have a toothache.改为一般疑问句
do these students have a toothache?
have 意思“有”时;可以有2种改法:i have a book.---- have you a book?or:do you have a book?
have是其他意思时,则要用助动词do,如上题.