Set 5: Form, Structure & Sense (Intermediate)
Explanation
PASSAGE
Recent studies show that the research team, determined to solve the mystery, _______ tirelessly for three years before finally achieving a breakthrough.
Which choice completes the text so that it conforms to the conventions of Standard English?
Detailed Answer Explanation
[Variation 1] This question tests your understanding of sentence function and text organization. 'The research team' is singular (collective noun acting as a unit). 'Worked' (past tense) matches 'before finally achieving' (past context). Each sentence in a well-constructed text serves a specific purpose. Consider what role this sentence plays in the argument: does it introduce, support, contrast, or conclude an idea? Understanding why an author includes specific sentences helps you grasp the overall argument. Each sentence should serve a clear purpose: introducing ideas, providing evidence, acknowledging counterarguments, or drawing conclusions. Identify the role to understand the structure.
Key Evidence:
• "The research team, determined to solve the mystery"
• "before finally achieving a breakthrough"
Why others are wrong: A ('Works' is present tense; context is past ('before finally achieving').), B ('Working' is a participle; the sentence needs a main verb.), C ('Work' is base/plural form; team (singular) and past context need 'worked.').