I won't go to the cinema with you; I … the movie.

Analyze the question: The sentence is "I won't go to the cinema with you; I ..... the movie." The student is giving a reason for refusing. We need the verb form that fits grammatically and logically.

Explain the concept: The present perfect tense (have/has + past participle) is used for a past action that has a result or relevance now. Here the speaker's earlier viewing of the movie is the reason for the present decision not to go.

Step-by-step solution:

• A. seeing: "I seeing the movie" is ungrammatical because it has no auxiliary verb.
• B. have seen: "I have seen the movie" is grammatical. It links the earlier viewing to the present refusal, so the meaning is clear.
• C. seen: "I seen the movie" is non-standard because the auxiliary "have" is missing.
• D. had seen: The past perfect needs a past reference point, such as "I had seen the movie before you called." The present/future context here (won't go) doesn't support it.

So the sentence reads: "I won't go to the cinema with you; I have seen the movie."

Answer: B

Tip: When you see a bare past participle like "seen," "done," or "gone" with no helping verb (have, has, had, was, is), eliminate it quickly. Then ask whether the sentence is about the present (present perfect) or about something earlier than another past event (past perfect).