Introduction / Context:
This item tests grammar and verb form accuracy in a sentence split into four parts. You must identify the segment containing the grammatical error, or choose “No error” if the sentence is correct.
Given Data / Assumptions:
- The clause refers to a finished action about a project in the past.
- Standard formal English is required.
- Each slash-separated chunk represents an option.
Concept / Approach:
Completed actions typically take a passive construction when the subject receives the action. After “know that,” a full finite clause is expected. The noun “project” cannot perform “completed” without an auxiliary unless it is an adjectival participle, which requires different phrasing.
Step-by-Step Solution:
Check Part A: “We are happy” — grammatically correct as a predicate adjective.Check Part B: “to know that” — an infinitive of purpose linking to a content clause; correct.Check Part C: “the project completed” — incorrect. It lacks the necessary auxiliary for a passive or perfect form.Preferred corrections: “the project was completed” (simple past passive) or “the project has been completed” (present perfect passive).Check Part D: “strictly as per the schedule.” — idiomatic in Indian English; acceptable.
Verification / Alternative check:
Substituting “was completed” yields: “We are happy to know that the project was completed strictly as per the schedule,” which is fully grammatical.
Why Other Options Are Wrong:
A and B are standard; D is idiomatic and acceptable. Only C breaks verb-form rules.
Common Pitfalls:
Confusing a past participle used adjectivally with a finite verb form; omitting auxiliaries in passive constructions.
Final Answer:
the project completed
Discussion & Comments