Can I have two separate expenses accounts, one in US dollar and another in cad

Hi golabbeauty-gmai, 

QuickBooks Online gives you the flexibility you need to connect your bank accounts. The program offers a variety of tools and resources that make it fun to manage your banking. 

Based on the details you've provided, you can connect the US dollar bank account using the steps in this article here. I also encourage you to check out the following article that shows you: How to add a foreign currency account.

Let me know if these resources are helpful. I'll be one message away in case you have other questions.