Explanation

What has happened to him?

اسے کیا ہوگیا ہے؟

The preposition "to" is used with "happened" to indicate the person affected by the event or situation.

Explanation

Injurious to means مضر صحت یا نقصاندہ

We generally use to after detrimental and injurious.

To is a preposition here.

Smoking is injurious to health means تمباکوشی مضر صحت ہے

Explanation

This table is made of wood.

یہ میز لکڑی سے بنی ہے۔

The preposition "of" is used to indicate the material that forms the substance of something, such as wood in this case.

Explanation

I am inclined to help him.

میں اس کی مدد کے لیے مائل ہوں۔

The preposition "to" is correctly used with "inclined" to indicate a tendency or willingness to do something.

Explanation

He was guilty for stealing a pen.

وہ قلم چوری کرنے کا مجرم تھا۔

The preposition "for" is used with "guilty" to indicate the reason or cause of the guilt.