Which course are you teaching? I assume you are referring to Computer Science Discoveries (which has unit 1 Problem Solving)?
Also, which questions are you referring to? Questions on the Activity Guides? If so, the Activity Guides are available as Google Docs and if you're familiar with Google Classroom, you might want to check out this blog post (with accompanying link to a support article at the end of it) about integrating code.org and Google Classrom: Code.org integration with Google Classroom
You can also have students make copies of the Activity Guides onto their own Google Drives, then type in responses and share their documents with your account.