Choose the option that completes the second sentence so that it means the same as the first, using the key word.
First sentence: I'm sure she didn't see us.
Key word: CAN'T
Second sentence: She ___ us.
Answer and explanation
Correct answer: D. can't have seen
- Step 1: Check what grammar the key word needs. Step 2. Negative deduction about the past uses 'can't have' + past participle. Answer: can't have seen. Why not the others: The other forms are the wrong tense or ungrammatical.
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