Transforming the document into interactive activity is much easier by uploading it from One Drive.
Click "Create Edform" on the left bar of the main page.
You are suggested to choose how you're going to upload the document. Click "One Drive."
In the pop-up window, select a Microsoft account to log in to.
Allow Edform access to your "One Drive," then click "Continue."
When you are redirected to "One Drive," find a needed document on Google Drive and click on it and the button "Select."
The document is loading to the builder. Once you select pages and set up the grade and subject, you can transform the document into interactive online activity.