Countable vs. uncountable nouns

[romy]

English Grammar Error, Intermediate level

ESL/EFL Test #20 "Singular vs. Plural Nouns", question 1

I'm not totally certain for the facts but from what I have heard, it seems that there were several people injured.

(a) totally
(b) for
(c) injured

English Grammar Error, Intermediate level

ESL/EFL Test #20 "Singular vs. Plural Nouns", answer 1

I'm not totally certain of the facts but from what I have heard, it seems that there were several people injured.

Correct entry: of
The error was: (b) for
_________________________

what do it want me to do?

romy

[Alan]

Hi,

In this test you do two things: find the error and then replace it with the correct word.

Alan
_________________
English as a Second Language
You can read my ESL story Have a Break!

[Tuga]

Is it wrong to say "certain about the facts" ?

Why is the correct answer "of"?

[Mister Micawber]

.
'Certain of' and 'certain about' are both right, Tuga, but we must choose only one for the answer template. The writer may have flipped a coin to choose.
.
_________________
Native English teacher at Mister Micawber's

[Alan]

Probably a bit more scientific than this, I should have thought!

[Yankee]

What's the reason then, Alan?

Your comment suggests that you disagree that 'about' could have easily been used instead of 'on' in the test sentence.
.

[Alan]

When you write a test with multiple choice to find the error, there is always a 'correct' answer in mind so that the mechanics of the system can work. There is however the risk that there could be other possible 'correct' answers. The point is that 'for' is wrong and in the answer 'of' was offered as a correct answer. I assume you meant 'of' here: