Although some students may be innocent, ______are guilty of this offence.
Answer Details
The word that correctly fills the blank in the sentence is "most."
The sentence implies that there is a group of students who have committed an offence, but not all of them are guilty. The word "most" is used to refer to a majority or largest portion of a group. So, it means that while some students are innocent, the largest portion of the group of students is guilty of the offence. The other options, "much," "great deal," and "a good deal," do not convey the same meaning as "most" in this context. "Much" implies a large quantity, but not necessarily a majority. "Great deal" and "a good deal" refer to a large amount or degree, but not specifically to a majority of a group. Therefore, the correct answer is "most."