Du is very specialised and more 'traditional' when compared to other tutoring centres (as you know)
It depends if you want that competitive atmosphere, or want to opt for 1-1 which will work more at your own pace
Would you consider going somewhere else for group tutoring?
As everyone mentioned, it's basically a major work/thesis that you need to complete for 4U English
If you're excellent at writing I would highly recommend, if not, then honestly stick to 3U English instead
The feedback from last year was that the Bio exam was testing people on the strangest topics. It seemed like it was something that people couldn't really study for! Have a look at the 2020 Discussion Groups on FB about feedback on Biology, it was very hit or miss last year.
Plus Bio has a lot...