Here, 'towards' means 'in favour of'. Hence it is correct preposition to be used.

'On' is used to show that something is in a position above something else and touching it. Here 'restaurant' is above surface of 'Mount road' and touching it.

In this sentence, preposition that appropriately fits in blank to convey intended meaning is "in". The complete sentence would be:

"His attitude in his work is very negative."

This usage of "in" indicates that negativity is associated with his work or is reflected within his work. It's a common preposition to use when describing someone's attitude or behavior in a specific context, in this case, his work.

The or options do not fit as well in context of sentence:

Option A: to would imply a different relationship between attitude and work.
Option C: about and Option D: of are less commonly used in this context.

So, correct answer is Option B: in.

Here 'in' is used to indicate with help of red ink. Hence it makes sentence meaningful.

'On' is used to show that something is in a position above something else and touching it. Here 'watch' is above 'table' and touching it.

The correct preposition to use in this sentence is "of". The sentence should read, "He parted of all his property." The preposition "of" is used to indicate possession or association. In this context, it signifies that he separated or distributed his property among ors.

Option A: on is not correct answer as it does not convey intended meaning of dividing property.

Option B: in is not correct answer as it does not convey same meaning as "parted." "In" is used to indicate location or a state of being.

Option D: over is not correct answer as it does not accurately convey idea of dividing property.

Given options provided, correct answer is Option C: of.

'Bargain for' means 'to expect or be prepared for something'. Hence it makes sentence meaningful.