完成句子
【小题1】同学们请靠马路右边行走。
Boys and girls please walk ___________________ side of the road.
【小题2】过马路时必须小心。
You must __________________ when you ___________________.
【小题3】她的脸上总是带着温暖的微笑。
A ________________ is always ___________________________.
【小题4】The students need some unusual books to read after school every day. (改为单数的句子)
The student _______ _______ unusual book to read after school every day.