Vault seed record
Used to early calls
Choose the natural sentence.
Classification
Provenance
Kind: human-authored
Source: reviewed-expansion-anchor-pack
Batch: reviewed-expansion-core-grammar-control-2026-05
Reviewer: content-lead
Updated: 2026-05-21
Instruction and answer
Instruction
Choose the best answer.
Correct answer
I’m used to early calls.
Explanation
Be used to means be familiar with something; it is followed by a noun or -ing form.
Product use
Surfaces
Source languages
Difficulty
medium
Conversion hook
A familiar phrase becomes a grammar trap under pressure.
Review payload
Review notes
Approved seed anchor from the reviewed expansion pack. Used to close family coverage gaps before scaled promotion.
Media prompt
No media prompt attached.
Assets
Source traps
Tags
Usage
Tests: grammar-diagnostic, general-english-level, error-detection
Funnels: general-level-assessment
Challenges: grammar-anchor-12
{
"type": "single-choice",
"correctOptionId": "im-used-to-early-calls",
"options": [
{
"id": "im-used-to-early-calls",
"label": "I’m used to early calls.",
"rationale": "This is the defensible answer in the context."
},
{
"id": "im-used-with-early-calls",
"label": "I’m used with early calls.",
"rationale": "This distractor reflects a common learner mistake."
},
{
"id": "i-use-to-early-calls",
"label": "I use to early calls.",
"rationale": "This distractor reflects a common learner mistake."
},
{
"id": "im-used-for-early-calls",
"label": "I’m used for early calls.",
"rationale": "This distractor reflects a common learner mistake."
}
]
}