Can I use "becomes" in lieu of 'is' in 'it's time to review'

People use different symbols to make information stand out in the text. Some like to put boxes around key names or events, whereas others might prefer circles. To highlight lists of reasons or examples many people use numbers, but some like to use letters. The symbols you use don't matter, as long as they server their purpose. The symbols should make significant information stand out from the text so that you can spot in immediately when it's time to review.
[Source: Reading for Results Ninth Edition by Laraine Flemming]
I'd like to know I can use either "comes to" or "becomes" in lieu of "is."
Thank you in advance for your help.