What are the situations of using "You are welcome"? Is this phrase frequently used nowadays?

Which preposition of place should be used with the noun "street"? Please, give some examples.

Which variant is right to say: "one one one" or "double one one" or " one hundred and eleven"? What variant is better to use when speaking about the number of group in an educational institution? For example, The students of group 111 have two lessons today.

The synonym for "borderman" is "frontiersman", isn't it? Does the word "frontierman" exist?

Is it possible to ask a question like this: Have you ...(a car, a brother)? Without "do" and "got"

How to use articles with "weekend(s)"? Is there any difference in American and British English? For example: I go to the cinema at (the?) weekends.

Practice I am on a practical training now. My students are 12 years old, they're in the 5th grade. Today we had a rehearse of the performance. It will take place on Saturday. They will act different animals: kittens, bears, a fox, a cock, a frog and others. I hope everything will be ok!

How to use modal verbs??? ''can'' vs. ''may'' and ''shall" vs. ''should'' China may become a major economic power.= Future possibility What if I will use ''can'' here? How to differentiate them in such sentences?

First notebook entry: Introducing myself I'm a student of the language faculty. My chief subject is a language teaching methods (the English language). I think I have little practice in English and it's not good for my future career...