Looking on the internet deeply has found these results:

do an internship is the most popular phrase on the web.

undertake an internship 195,300 results on the web	do an internship 1404,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Bruno offered her an internship in Manhattan this summer. She's doing an internship in the U.S. I'm doing an internship at a terrific chocolate factory. I applied for an internship at Sire Records. I got offered an internship with Pitchfork Media. The kid was supposed to get a job this summer, an internship. I was all set for an internship at mass gen. This is kind of an internship to help me get into nursing school.	I have been offering many young people for years the chance to do an internship in my MEP offices in Brussels or Strasbourg. I am therefore in favour of promoting the status of internships. Took a year off to do an internship at the Sunnydale Mental Hospital. Groups of young executives are taught the language (for 9 months in Japan, a shorter period in Korea) and then do an internship in a company. You remember when I graduated from college and I went straight to Washington to do an internship?

undertake an internship

195,300 results on the web

do an internship

1404,000 results on the web

More popular!

I have been offering many young people for years the chance to do an internship in my MEP offices in Brussels or Strasbourg. I am therefore in favour of promoting the status of internships.
Took a year off to do an internship at the Sunnydale Mental Hospital.
Groups of young executives are taught the language (for 9 months in Japan, a shorter period in Korea) and then do an internship in a company.
You remember when I graduated from college and I went straight to Washington to do an internship?