The sentence is: "When does she and I need to come in?"
Personally, I would change the pronouns to "we": "When do we need to come in?" But the teacher insists the first sentence is correct and I am wrong. Please help! ??
"Does" is dead wrong. It is "do" for the reason you state. Sometimes it is speaker's choice whether to construe a pair as singular, but not this time.
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"Does" is dead wrong. It is "do" for the reason you state. Sometimes it is speaker's choice whether to construe a pair as singular, but not this time.
You are right.
You could also say 'When do she and I need to come in?'