The economy of our country has improved significantly over the years, which led to the rise of product price.
请问老师，从句用过去时，或者一般现在时可以吗？
从句用一般过去时不算好，最好是用现在完成时，也一般现在时也可以：
The economy of our country has improved significantly over the years, which has led to the rise of product price.
