First and most important piece of advice:
The mocks are there as part of the learning process on how to succeed in exams, not a hurdle to trip you up.
There’s quite a bit of advice about the reading and writing skills needed in earlier entries of this blog. In particular, look back at the archives for last December. There are also plenty of revision resources for the poetry and Lord of the Flies linked in the relevant pages from the sidebar on the right.
On Lord of the Flies for the Literature Paper, you may find the section on symbolism in the revision notes particularly useful for one of the question options.
I think the best materials on the poems are the notes by Andrew Moore in the ‘Universal Teacher‘ guide, which also includes some excellent general advice on tackling the exams. I strongly recommend you reading what he has to say, both on the Literature poems (Heaney, Clarke & pre-1914) and the poems from Different Cultures. Although I’ve told you the minimum you can get away with for the mocks, it would make sense for you to have some other poems up your sleeve that you are also familiar with (many of you took my advice earlier on this when I suggested looking at a poem or poems of your own choice; in particular, as we only looked at one Gillian Clarke poem in any depth in class, you may like to add another in case you don’t like the idea of using A Difficult Birth, 1998 with your chosen question). If you want to be able to tackle all three questions offered on the literature poems, rather than just the first two, the other named poems that are offered for you to choose from are: At a Potato Digging, Mid-term Break, Cold Knap Lake, The Field Mouse, Tichborne’s Elegy and The Laboratory. I mention these as guidance if you want to do more, but remember that Digging, A Difficult Birth, The Affliction of Margaret, and Patrolling Barnegat, or On My First Sonne – the poems we covered in class – will allow you to tackle the literature mock paper adequately.
If you know that technical aspects of your writing sometimes let you down, then the BBC Skillswise site has lots of useful information and exercises to do.