Identify the preposition(s) in the following sentence:The son of Mr Smith was a train driver.
Identify the preposition indicating purpose in the following sentence.
Sitaram from Rampur village was a self-made man with a sharp business sense and he always did things for his own material gain.
Identify the incorrectly used verb in the sentence.
Mr Khanna’s riches was so great that he could buy half of the city.
Identify the preposition of destination in the following sentence.
The substitute teacher was not well received by the naughty students who did everything to annoy her, including throwing paper balls at her when she taught the class.