Go straight means live honestly in general or not to break the law in specific. EX.The judge encouraged the thief to go straight. Go along means to continue, also i could to accompany. EXs. The trainee is going along well in his new job. Are you going to the party?! can i go along?

"a majority of the students" means a lot of students maybe 30 or 40% "the majority of the students" means more than 50% of the students. I hope that was useful.

You could simply say: it's an honor, for ex. "It's a big honor to meet you madame."

No, it doesn't make any sense, you may say: This book is dull unlike that one, that means the other book was so much interesting than the one you're talking about. I hope that was useful.

"I met Beatriz one and half year ago and i'd like to say that she's just wonderful and very extrovert. During that time we had very funny situations together, actually i'm depending on her to travel and come visit me, she's energetic and outgoing, most of that she's pretty adventurous! Without any doubt Beatriz is a lively and friendly person that you can share some fantastic things with. You never get bored with her! Hope that was useful.

My first post

Hello.
This is my first post and I do not know what to write. I live in Chile with family. I was born the fourth of seven sisters. I teach language and literature in ( it'd have been better if you had said where you're teaching this). I want to learn English to teach Spanish to foreigners.

This idiom means to have something to complain about, for ex. Tom, I need to talk to you. I have an axe to grind, also it may mean to have a selfish reason or strong opinion that influences your actions, for ex. The study should be conducted by a firm that has no axe to grind. i hope that was useful.