How often does it ring（）an hour?在阔号里填介词

How often does cheng watch how does it taste? how does it taste how does it feel how does it how often does it take you to get to school by bus哪里错了 How often does it take to walk to the bus stop from here.改错 How often does it take the earth to move around the sun? How often does it occured to earthquake every year in China?这句话对吗? how often does it take the earth to move around the sun不是翻译是回答 你通常花多长时间做家庭作业?how long does it often ( ) you( )do your homework? does it take him to get to school?--About fifteen minutesAHow often B.How longCHow far How often does it ring（）an hour?在阔号里填介词 （ )does it take to get there?It takes four hours..怎么填A How many B How often C How soon D How along he often does this可不可以用he often does it How often does he ___（exercise）? how often does he have sports? how often does your mother watch tv