1.本课课程的核心句是Hasn't anyone repaired this car yet? It has already been repaired. Hasn't anyone corrected these exercise books yet? They have already been corrected.
2.本课课程的核心句是Hasn't anyone caught the thief yet? He hasn't been caught yet. Hasn't anyone caught the thief yet? He will be caught soon!
3.本课课程的核心句是Hasn't anyone caught the thieves yet? They haven't been caught yet. They will be caught soon!