在他读中学时就很重视外语学习。
参考答案：读中学时，他就很重视外语学习。
铅护套封铅其操作方法常用的有（）和（）两种。
He knew the problem was serious and undertook to look into it he reached the office.
A．suddenly
B．immediately
C．abruptly
D．shortly
