Tricky Word Forms

<http://www.flo-joe.co.uk/cae/students/strategy/wform/tricky.htm>

1
Your help has been.......... . I couldn't have finished my essay without it.
valuable
invaluable X
2
You'll enjoy reading this book. As well as being informative it's really ..... in places, too.
humorous X
humourous
3
Many people think that capital punishment is completely ......
unacceptable X
unacceptible
4
I'm getting a bit fed-up with your ....... behaviour. Why don't you try behaving like a grown-up?
childlike
childish X
5
More people are turning to organic food these days because they're worried about all the different ........ in processed food.
additions X
additives X
6
The patient lifted up his ...... hand for the doctor to examine.
bloody X
bloodlike
7
It was absolutely ........ trying to repair the broken bicycle.
useful X
useless X
8
He is an ........ by birth although he lived in Spain for most of his childhood.
English X
Englishman X

I got 5 out of 8. The correct answer is red.

forming noun

I didn't find the rule to form a noun, which noun is suitable for + hood, +ism, +ship, +dom? The world of noun is the big sky, isn't it?

<http://www.flo-joe.co.uk/cae/students/strategy/wform/nouns1.htm>
My score is 2/4. Here are 2 wrong sentences.
The film was praised by the critics for its real ........ in showing the horrors of war.
--> hood --> ism (realism)

During his boy....... he was a rather naughty child.
--> ism --> hood (boyhood)

<http://www.flo-joe.co.uk/cae/students/strategy/wform/nouns2.htm>
My core is perfect:4/4
New words are: motherhood, terrorism, good chance of gaining stardom and recognition

Word formation/ families: parts of speech

<http://www.flo-joe.co.uk/cae/students/strategy/wform/parts1.htm>
Parts of Speech 1:
It is .......... that you wish to change jobs, but the company will be very disappointed to lose you. (UNDERSTAND) --> verb--> adjective

My score is 75 %, the oboved sentense is wrong. Right answer is in red

<http://www.flo-joe.co.uk/cae/students/strategy/wform/parts2.htm>
Parts of Speech 2:
I got a perfect score: 100%

<http://www.flo-joe.co.uk/cae/students/strategy/wform/parts3.htm>
I got 6 out of 8 sentences. There are 2 my wrong sentenses:

5. (DO - VERB)That simple mistake meant she managed to .......... all her good work.
--> do --> undo

8. (KIND - ADJECTIVE)My grandmother was one of the .......... people you could ever have met.
--> kindly --> kindest