今天我们要学习的句子是：

Our investigation shows that improper packing caused damage. Therefore we have to refer this matter to you.

我方检验证明，货物受损是由于包装不当而造成的。因此，我们不得不将此事提交你处解决。

I’ve come to make sure that your stay in Beijing is a pleasant one.

我特地为你们安排使你们在北京的逗留愉快。