4. It seems that sb. do sth. = sb. seems to do sth.
It happened that sb. do sth. = sb. happened to do sth.
It is said (reported) that sb. do sth. = sb. is said (reported) to do sth.
5. Half of the visitors are … Half of the wood is …
Most of the teachers are… Most of the water is …
The rest of the books are … The rest of the money is …