主語從句：
1、That he will come and help us is certain.
2、What he is has nothing to do with you.
3、Whoever gets the job will have a lot of work to do.
4、How we can protect hte grain from damp needs to be discussed.
5、When and where the test will be given is not yet decided.
6、How much water is flowing can be easily measured.
7、It is not clear who was responsible for the accident.
8、Whether this is true or not remains a mystery.
9、How much we can spend must be agreed on.
10、That he was right was quite clear.
表語從句：
1、The problem is that smokers can't go without smoking.
2、Virtue is whatever one must possess first.
3、I drove to Zhuhai for the air show last week.
4、The difficulty was how he could prove his ideas to other scientists.
5、Is that why you had a few days off?
6、It looks as if it hasn't been washed following the instructions.
7、This is because two thieds of the earth's surface is made up of wast oceans.
8.The problem with looking into space from the earth is that there is a lot of dust in the earth's air.
9、This is what I want to say.
10、My opinion is that you should not go alone.
賓語從句：
1、They know that the habit may kill them.
2、I'm glad that you have come.
3、Considering that Charles would be sentenced to death,he went to a chemist's shop and bought some special medicine.
4、I'll go to that shop and see whether they have a telephone.
5、whether he is an expert,I don't mind.
6、They doubt whether or not Jack is a good student.
7、Go to stamp sales and buy whatever you can afford.
8、Take whichever you like best.
9、We will see what we can discover.
10、Do you know where he lives?