预约高中1对1精品课程(面授/在线),满足学员个性化学习需求 马上报名↓
预约课程还可获赠免费的学习复习诊断
用a an 填空
1.This is ______melon and that is _____apple.
2. I can send my friend ______ e—mail.
3. Do you live in ___house? No. My family lives in ___ apartment.
4.You can see ______old man in Picture One.