There are some things in grammar i keep getting wrong no matter how many times i look them up to see the correct way of writing them. Onto and on to is one of those things. Into and in to has been another. And there are a few others too. Are there any grammatical things that you often get wrong, or do you often spell particular words wrong? For many, many years i'd spell definitely as definately. Bit embarrassing now but back then i really believed i was spelling it correctly. I still stop and wonder if i have spelt words that end in 'ent' and 'ant' correctly as well, i still usually have to look them up. Like intolerent, for example. There you go, i just looked up intolerant just to make sure i'd written it correctly and found i hadn't![thought it was intolerent.] The quiz, is it onto or on to in these sentences? 1. Billy, I’m worried that climbing on to/onto that tree limb is unsafe. 2. My daughter is going on to/onto graduate school. 3. Jose stepped down from the ladder on to/onto the ground. 4. The magician realized one person in the audience was on to/onto his trick. 5. After you drive five miles, turn on to/onto Highway 280 south. 6. The Gateses have moved on to/onto a life of philanthropy.