Great game! I played 3, got 82, 86 and 90. The only thing I could think of to get the answer to missed questions is to click on the Hint, you might have to read a few of them but usually the answer is in there somewhere!
I try and answer the ones I know all over first. One word in the sentence is always in the line below it and so forth. The hint helps sometimes but not always. They do not give you the correct answer.