giúp em 3 câu btvn này với , em cần lời giải cụ thể ạ

11. The tropicalgardens are open all year round. We love to walk around them. A. The tropical gardens which we love to walk around are open all year round. B. The tropical gardens which we love to walk around them are open all year round. C. The tropical gardens in which we love to wal ...