for islamyat go 4.

Carvan publishers
2.imtiaz shahid
3.khurshid ahmed.

Best book 4 islamayt is Quran i majid bt one can't study it, bt u should have little info of Quran i majid ,its translation.so examiner
will have perception that u r very qualified person.
For this go 4 "Allama muhammad ghazali" ke buk ,that have many citation of Qurani majid and info of current affairs.

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"Wa tu izzu man-ta shaa, wa tu zillu man-ta shaa"