Verb Tenses By this time next month, he ... (relax) in prison. Which Future Tense shoould be used?

Word formation He was very excited at ... (involve) in catching the criminal. How should the word "involve" be changed to match the sentence? My option is "involvement". Am I right?

A group A group of students come or comes ... ?Group nouns such as audience, class, family, team etc. can be used either with a singular or a plural verb. Is "group" such a group noun?

The definite article with the names of lakes I have found different versions of the rule: the one says - the Baikal, the other - Baikal. Which is correct?

Tag questions Is the following question possible? Could I help you with History, couldn't I?

Question with "rely on" Which is correct: Whom in your family can you rely on? Whom can you rely on in your family? On whom can you rely in your family? ...

A joke I found a joke in the English textbook for pupils. (A granny watching football on TV and a boy tired from school) "- Granny, I'm hungry... and I've got a lot of homework! - Wait a few minutes! Our boys will score and then I'll cook your dinner." I can't get it. (( What's the point in it?

Verb Tenses Which is correct: the Present Perfect Continuous or the Present Perfect? I haven't been going to the gym for over a month. I haven't gone to the gym for over a month.

"Feel" Does the verb "feel" make sense in the following sentence: "It's a beautiful day and the sun feels great!" (from a Grammar Book by V. Evans and J. Dooley)