Solution:
Sentence is in **past tense** (“Did you think”),
so the action that happened **before** that must be in **past perfect tense**.
Correct form: “Did you think you **had seen** me somewhere before?”
Choose the correct preposition:
He was of a charitable disposition, but did not like a number of his relatives trying to live …………….. him without trying to earn their living.
Solution:
Active voice: “A stone struck me on the head.”
→ Subject: A stone
→ Object: me
→ Verb: struck
Passive structure: **Object + was/were + past participle + by + Subject**
✅ Correct passive: “I was struck on the head by a stone.”