Complete the sentence:
'Had the geological surveying team recognized the instability of the shale stratum, they [...] the tunnel boring operations.'
Answer and explanation
Correct answer: B. would have suspended
- Step 1: Inverted third conditional (past counterfactual): 'Had [subject] [past participle]...' acts as 'If [subject] had [past participle]...'. Step 2. The main clause requires 'would have + past participle'. Step 3. Correct completion: 'would have suspended'. Answer: would have suspended. Why not the others: Third conditional requires 'would have suspended' to express an unfulfilled past consequence.
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