Doctors generally agree that such factors as cigarette smoking, cating rich foods high in fats, and alcohol consumption "not only do damage by themselves but also aggravate" genetic predispositions towards certain diseases

[ঢাবিঃ গ ইউনিট (ব্যবসায় শিক্ষা) ২০১১-২০১২(বাতিল কৃত) : 2012]

1. not only do damage by themselves but also aggravate

2. do damage by themselves but also are aggaravating to

3. are damaging by themselves but also are aggravating

4. not only do damage by themselves, they are also aggravating to

5. are doing damage by themselves, and they are also Aggravating

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