The group of people _____ the hotel after walking for 6 hours. They needed to have a rest.
---How are you? -- I ________ fine.
---What’s this? ---It’s ________.
“ 千克” 的缩写形式是________.
下列字母的发音中含有元音音素的是________.
下列字母中不是元音字母的是________.