1.while my former teacher had been patient with all the students,my new teacher quickly punished tho

题目

1.while my former teacher had been patient with all the students,my new teacher quickly punished those who gave a incorrect answers.
这个句子里的had been 怎么讲?如果是过去完成时,后面怎么没动词?
2.I worked hard to meet the minimum standards set by the course and to complete assignments on time.
这里的set是什么意思
3.it is critical that students feel comfortable expressing themselves in writing.
expressing前面是不是省略了一个介词in

答案

1.my former teacher was patient with all the students.Patient 形容词 be patient with 对(某人)有耐心因为此句时态是过去完成时,即成如下形式--My former teacher had been patient with all the students.2.set...