()()houyrs are there in a day?两个括号中该填什么

(How)(many)hours are there in a day?

（How)(many)hours are there in a day?你打错了，应该是hours：因为这句话的意思是一天有多少小时。尽管how much 也是how many 的意思，可它后面跟的是不可数名词。不知你懂了没有？