For English,

Exploring the world of english by Sa'adat ali and B.A english guide which contains Translations both from english to urdu and from urdu to english,

secondly, focus on your english expression, for this you have to try to write atleast one essay a day and get it checked by qualified person, in this way within a month your english expression will be improved and you grammar and other mistakes will be eradicated, try to translate newspaper paragraphs into urdu and Urdu newspapers paragraphs into english,

for precis this book is quite helpful,

Precis writing techniques by R. Dillon.

For general knowledge paper,

Everlatest general knowledge by Bhatti publishers,
in this book you have to study geographical, political, literary, legal, biological, physical, and chemistry terms,

also study reasoning questions of science,
and then abbreviations, news agencies, books and authors, prominent places, glaciers, canals, etc, you to cover extensively your general knowledge fore anything can come from it,

for pak and current affairs daily dawn is sufficient, it also needs your english expression plus information regarding the topic.

if pak study is also there then Ikram Rabbani's book is enough at this level.

Regards.