Orthita as well as Obhnibesh (to be)--- attending the party.

The missing word in the phrase is Newcastle. The idiom "carrying coals to Newcastle" means doing something completely redundant, pointless, or unnecessary because you are supplying something to a place that already has plenty of it.

Where there is a will, there is a way. This famous proverb means that if you have strong determination to do something, you will find a way to achieve it, no matter how hard it seems. 

The negative sentence without changing the meaning of "Jerry was only four years old" is: "Jerry was not more than four years old." 

The passive voice of the sentence is: "She was helped to solve the problem by me." 

The compound sentence for "I saw him going to market" is:I saw him and he was going to market.

The most common and direct synonym for "augment" is increase.