Vault seed record
Interested in pattern
I want to improve my speaking. I am interested ___ joining the conversation club.
Classification
reviewed-seedapprovedcore-grammar-controlpreposition-pattern-gapgap-fillA2Grammar
Provenance
Kind: human-authored
Source: core-grammar-anchor-pack
Batch: core-grammar-001
Reviewer: content-lead
Updated: 2026-05-20
Instruction and answer
Instruction
Choose the preposition that completes the sentence.
Correct answer
in
Explanation
Use 'interested in' before a noun or -ing form: interested in joining, interested in music, interested in the job.
Product use
Surfaces
testdailyfriend-challenge
Source languages
globalrues
Difficulty
low
Conversion hook
Useful enough to feel like a quick speaking upgrade.
Review payload
Review notes
Clear adjective-preposition plus gerund seed.
Media prompt
No media prompt attached.
Assets
preposition-micro-scenestranslated-phrase-distractors
Source traps
global-collocation-transfer
Tags
prepositionsadjective-patternspeaking
Usage
Tests: prepositions, grammar-diagnostic, speaking-confidence
Funnels: none
Challenges: interested-in-club
{
"type": "single-choice",
"correctOptionId": "in",
"options": [
{
"id": "in",
"label": "in",
"rationale": "Interested in + noun or -ing form is the standard pattern."
},
{
"id": "on",
"label": "on",
"rationale": "Interested on is not standard English."
},
{
"id": "for",
"label": "for",
"rationale": "For does not follow interested in this meaning."
},
{
"id": "to",
"label": "to",
"rationale": "Interested to can appear before hear/see/know, but not before joining here."
}
]
}