Correct Usage of the Past Continuous Tense
Step 1: Understanding the Rule
The sentence refers to a past continuous action that was happening when another action ("heard") occurred.
The correct structure for past continuous is:
was/were + present participle (verb + -ing).
Step 2: Choosing the Correct Verb Form
The correct form is:
"was lying" (past continuous).
Step 3: Eliminating Incorrect Options
- Lay (Option B): Simple past, which does not fit the context of an ongoing action.
- Have lain (Option C): Present perfect, incorrect for past events.
- Had lain (Option D): Past perfect, which requires another past event before it (not suitable here).
Step 4: Correct Usage
The correct sentence should be:
"He was lying on the bed when he heard a noise."
Final Answer:
Thus, the correct answer is Option A ("was lying").