You are welcome to answer questions posted in the Ask a Teacher forum as long as your suggestions, help, and advice reflect a good understanding of the English language. If you are not a teacher, you will need to state that clearly at the top of your post. Please note, all posts are moderated by our in-house language experts, so make sure your suggestions, help, and advice house the kind of information an international language teacher would offer. If not, and your posts do not contribute to the topic in a positive way, they will be subject to deletion.
Hello Dinesh,
Except for Live and Stay, all of your pairs are different tenses of the same verb.
I know this today, I knew that yesterday.
I gave her earrings as a gift , not knowing that you had given her the same thing.
I went to the store at three. By the time I got home, Peter had gone to the gym.
Have you used a dictionary for "Live" and "Stay"? Can you show a sentence in which you're not sure which one to use?
Re: Usage of certain very common words 
Linear Mode
