sixth form advice

hi for alevels i wanted to do chem biology and psychology but for the college i wanted to go to i had a conditional offer where i needed 667 in chemistry biology and maths and the 7 could be in any of those three but in my results i got 666 and i was 2 marks off a 7. i have my enrolment appointment next week but how likely is it that they'll allow me to do the alevels and be lenient since i'm really set on studying those alevels. (xaverian college btw)