Really in need of some help

I Really need some help here two days ago i was taking this placement test(its a test to be accpeted in the school) i did well in most areas Reading 12.9 Math 9.3 """Language 6.3""" THtas not good i needed a 7.5 or higher to get in and what pisses me off is that i did that section and i know i did my best and it wasn't enough so i wasnt expected but they said i can retake the test over agin one last time to see if i can get it this time but my confidence has been crushed and i am not sure ican pull i off so i need a bit of some help coudl some help me out like give me a link to some web sites that help you in certain areas of langue(linguistics) it mainly ask questions like


Select the correct sentence.

1. Does John and Mary knows them?
2. Do John and Mary know them?
3. Do John and Mary knows them


The word "WHETHER"

1. acts like an appetizer in the expression "Whet her hunger."
2. introduces an alternative in a sentence
3. describes meteorological phenomena
4. describes a kind of sheep

The word "GASTROLOGY" is

1. The influence of the stars on humans.
2. A connoisseur of good food.
3. The study of the stomach.
4. The study of gases in the stars


aslo it ask questions where certain punsctions should be. things along that line


help would greatly be aprecitated.