Meaning: 'Conducted' means to carry out or perform a particular activity, especially in a formal or organized manner.

Wrong options:

• report: The word 'report' is a noun or verb that does not fit the grammatical structure here, as it does not indicate the action of carrying out a study.
• obliged: The word 'obliged' is a past participle that means to be required to do something, which does not fit the context of conducting a study.

Correct answer: re-explore

Explanation: The term 're-explore' is a verb that indicates the action of investigating or examining something again. It fits grammatically as it follows 'may,' which requires a base form of the verb, and contextually aligns with the idea of revisiting previous findings.

Meaning: 'Re-explore' means to investigate or study something again, particularly to gain new insights or confirm previous results.

Wrong options:

• report: The word 'report' does not fit here as it does not convey the action of investigating; it is more about presenting findings rather than exploring them.
• become: The word 'become' is a verb that indicates a change of state, which does not align with the context of revisiting findings.

Correct answer: determine

Explanation: The word 'determine' is a verb that fits grammatically as it follows 'help,' which requires a base form of the verb. Contextually, it aligns with the purpose of the research, which is to find out or establish the status of students' expectations and perceptions.

Meaning: 'Determine' means to establish or ascertain something, particularly through analysis or investigation.

Wrong options:

• report: The word 'report' does not fit as it does not convey the action of finding out or establishing; it is more about presenting information.
• become: The word 'become' does not fit in this context as it implies a change rather than the act of finding out or establishing.

Correct answer: remain

Explanation: The word 'remain' is a verb that fits grammatically in the present tense, indicating a state of being. It aligns with the context of discussing whether students' expectations and perceptions are unchanged or altered over time.

Meaning: 'Remain' means to continue to exist or stay in the same state.

Wrong options:

• report: The word 'report' does not fit here as it does not convey the idea of staying the same; it is more about presenting findings.
• become: The word 'become' implies a change in state, which contradicts the context of discussing constancy.