1.all the students in my class are kept

问题补充：

1.all the students in my class are kept

答案：

1.reading.keep sb.doing sth

2.pulled.see sth.done 看sth被做

3.called.hear sth.done 听到sth被做

考查分词,关键在于与分词发生关系的主语,看是主动还是被动关系,来确定现在分词还是过去分词.

======以下答案可供参考======

供参考答案1:

1.all the students in my class are kept _reading__(read)books after school .2.just now they saw the old houses _pulled__(pull)down by the worker .3.Tom was going through the crowd when he heard his name _called_(call)

供参考答案2:

reading

pullcalled

供参考答案3:

reading

pulled called供参考答案4:

这里给出的三个题目都是分词作宾补。对于分词作宾补其区别应该是比较简单的。分词与宾语之间的关系是主动的（表动作），用现在分词；如果分词与宾语之间的关系是被动的，则使用过去分词（表动作）。1句势被动句，read补充说明主语（主补），与all the students是主动的，填reading。2句house与pull down的关系是被动的，填pulled。3句name与call的关系也是被动的，填called。