2. 将下面每组中的词连成句子，使其中包含主语从句。
1) did not, a pity, he, come earlier, it’s, that
2) smoking, it is, cause, a well-known fact, lung cancer, can, that
3) encouraged him, it is, but, help him, true, actually, I, that, didn’t
4) they, keep their promise, didn’t, seem, it, likely, that, would ever
5) why, for criticism, hard to understand, had singled out, Mary, it was, Prof. Hardy
3. 将下面每组中的两个句子合并，将其中一个改为宾语从句。
1) What kind of show are they putting on?
Can you tell me?
2) Is the letter overweight？
I’m wondering.
3) How can we improve our study habits?
I am thinking of that.
4) Is Henry the right person for the job?
We are still uncertain as to that.
5) Peter has a slight headache sometimes.
He has always been in good health except that.
6) He had forgotten to take his notebook with him.
He suddenly remembered that.
4. 将下面每组中的两个句子合并，将其中一个改为宾语从句，并且用it作形式宾语。
1) I was far more intelligent than he was.
I always took that for granted.
2) You were unable to attend our meeting.
We all thought that was a pity.
3) You should mind your manners.
We consider that is important.
4) He was too ill to go on working.
He didn`t want that to be known.
5) Every one of you should finish your homework on time.
I regard that as important.
6) His father would come to his help if he got into trouble.
He took that for granted.
7) He might change his mind at the last minute.
We thought that was highly probable.
8) The train will be delayed by the dense fog.
I think that is likely.
9) You should stop smoking.