Must be in familiar with vs must be familiar with

Check any text for mistakes in above text box. Grammar Check your text.

Plagiarism Checker - Best Grammar and Plagiarism Checker for Students, Teachers

Looking on the internet deeply has found these results:

must be in familiar with is the most popular phrase on the web. 

must be familiar with

121,500,000 results on the web

must be in familiar with

1584,000,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:

Related Comparison