Hii Supraja.English of BITSAT is very easy.It is not at all in comparision to GRE.For that you just need to go through all the topics of Grammar,One month is ample amount of time.Daily choose a topic go through the rules and regulations and practice questions on it.In this way within 20 days at most you can cover all the topics.Then practice by mixing all the questions.Hope this helps you.All the best for your exam.If you find any difficulty feel free to ask me

NO.

In fact Bitsat engligh is very easy.

Refer Wren and Martin to gain confidence in English and grammar.