@M.A.R. Could you suggest any book as good as Wren and Martin but much better in difficulty level?

@RajorshiKoyal well, first you have to answer a question for yourself: Are you trying to improve your English, or are you passing an exam?

If it's the latter, then I don't really know any good "exam" books unless you're preparing for a TOEFL exam or something, in which case there are "canonical" practice books for TOEFL and IELTS, mostly revolving around the reading section, because that's the section that requires lots of voodoo and exam logic. And beyond those, people in your region that have taken the exam can offer the best advice.

If it's the former, I think the approach books like Wren and Martin take are fundamentally flawed, and they're setting you up for that sort of language learning that flies away two weeks after you stop "learning".

So if after all that you still wanna hear how I would improve my English if I were in your shoes, do tell me

I don't wanna turn this place into my blog yet

Yes I do want to learn. What do you mean by turning this place into your blog?

@M.A.R. I want to pass an exam that is all..

My mathematics ______(be) weak.

My history _______(be) weak.

How will that vary?

Please explain...

Here people follow Wren and Martin..

What is your verdict of the book..

I know you said it is flawed but what else.

I think I remember several questions and the book sounds, well, not flawless. Sorta like the blind leading the blind.

Non-native English throughout.

@RajorshiKoyal That it's useful to solve grammar questions so much it becomes an obsession. I mean, it leaves no room for actually using the language.

I'm not against grammar books, quite the opposite.

ok..

But I think they should be pretty liberal in their teachings, like, say, books like Grammar in Use are

Have you solved the book totally?

Give the learner plenty of opportunities to write things.

@RajorshiKoyal No not at all. I remember I found out about it a few years ago and I found its PDF. It seemed unremarkable.

It did have some grammar "rules" that it looked like it pulled out of its ass, if books had those.

I think for the most part only Indians use the book. Don't mistake it for some internationally praised bestseller

That's quite a population nonetheless.

Can you take sometime and suggest a book with enough complicated question and better rules in line with Wren and Martin?

Just like Wren and Martin but much remarkable.

@M.A.R. ?

@RajorshiKoyal Well as I said, I don't know of book with a similar problem-oriented approach. If you want a book with complicated problems, you should ask it in chats where Indian English learners are frequently present.

I can recommend in good conscience only the few books that I know are sorta a must for learners. Like 504 Essential Words. They're not at all problem-oriented though, they just have a few exercises just so they have the exercises. As a learner, it's your job to constantly find news ways of "exercising".