English grammar error-spotting (quantity phrases with ‘‘one and a half’’): Read the sentence split into four parts and choose the erroneous one; if none, select ‘‘No error’’: ‘‘The test will not need / more than one and half hour / to finish. / No error’’

Given data

• A: ‘‘The test will not need’’
• B: ‘‘more than one and half hour’’
• C: ‘‘to finish.’’
• D: ‘‘No error’’

Concept / ApproachThe idiomatic measure phrase is ‘‘one and a half’’ and, despite ‘‘one’’, the head noun is plural in form (‘‘hours’’). Verb choice ‘‘need’’ is acceptable colloquially, though ‘‘take’’ is more natural.

Step-by-step evaluationCorrect form → ‘‘more than one and a half hours’’.Thus, Part B is the error: ‘‘more than one and half hour’’.

Correction‘‘The test will not need/take more than one and a half hours to finish.’’

Common pitfalls

• Omitting the article ‘‘a’’ in ‘‘one and a half’’.
• Keeping the head noun singular after fractional expressions.

Final Answermore than one and half hour