---Do you know Mark Twain?---Yes .2hHe is a great writer of America. And he ____the name Mark Twain and became famous in the _______a e1教育名师原创作品
---What’s your ________? --- It’s 13958176532.
---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因素的是________.