I didn’t know when he back. He said he would call me when he home.
---What’s this? ---________.
26个字母中能够单独构成单词的两个字母是________.A. A,I B. I,N C. A.L D. A,N
下列各项中含有 / i: / 发音的一项是________.
下面属于元音字母的是________.
与r相邻的字母是________.