The number of the students in our school ___ 1,000, and a number of them ___ boys.
---How ________ your brother? ---Fine.
It’s an________.
---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________.