---about the student,the teacher called his parents to find out why he was so often absent from
问题描述:
---about the student,the teacher called his parents to find out why he was so often absent from
class.
A、concering B、 concerned 为什么选b?我不懂.
答
补全你就知道了.
【As they were 】concerned about the student,.
be concerned about .关心.