Sure or not ? Don't anyhow say hor.
This is not the school exam lor.
This is the actual "O" level exam leh.
Where got take prelim grades as actual "O" level grades even if
there are valid
medical excuses. 
Got.
Last time i take O level got one teacher tell me before a
student who is good in maths, suffer head injury before O level.
Hospitalise, i think kena concussion or what.
The O level result come out very bad.
Teacher write a report and they took the student's prelim
result(which is a grade A) as O level result. Of coz
they look at the student report book since sec 1 as reference
before deciding whether to take prelim as final grade.
