Question

we are glad to hear that you have accepted our

Answer 1

正确的表达是在our 后跟一个所接受的项目，例如：
1) We are glad to hear that you have accepted our offer;
2). We are glad to hear that you have accepted our quotation.

Answer 2

we are glad to hear that you have accepted our
我们很高兴听到您接受了我们的

Answer 3

句子不完整。
our后面应该有内容，可以为建议之类的词语，suggestion.