Looking on the internet deeply has found these results:

used to study is the most popular phrase on the web.

I used to study English in my school days 10 results on the web	used to study 11,050,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	The Fastest Camera Ever Created Will Be Used to Study Invisibility Cloaks. Written by. Jason Koebler. Staff Writer. December 3, 2014 // 02:45 PM EST. ? If you're wondering what scientists can do with a camera that captures 100 billion frames�... you will become used to it) "He finally got used to the winter weather. Don't make the mistake of combining both forms "used to do" and "be used to doing", as in "I am used to study." Remember: Either "I used to study" (past habit but no longer�... May 18, 2014 ... I used to study ... Note that this expression is never used in any form or construction except the simple past. B1. SUBJECT BE used to NP. B2. SUBJECT BE used to VERBGERUND. Here used to is employed as a transitive�... "Used to" expresses the idea that something was an old habit that stopped in the past. It indicates that something was often repeated in the past, but it is not usually done now. Examples: Jerry used to study English. Sam and Mary used to go to�...

I used to study English in my school days

10 results on the web

used to study

11,050,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

The Fastest Camera Ever Created Will Be Used to Study Invisibility Cloaks. Written by. Jason Koebler. Staff Writer. December 3, 2014 // 02:45 PM EST. ? If you're wondering what scientists can do with a camera that captures 100 billion frames�...
you will become used to it) "He finally got used to the winter weather. Don't make the mistake of combining both forms "used to do" and "be used to doing", as in "I am used to study." Remember: Either "I used to study" (past habit but no longer�...
May 18, 2014 ... I used to study ... Note that this expression is never used in any form or construction except the simple past. B1. SUBJECT BE used to NP. B2. SUBJECT BE used to VERBGERUND. Here used to is employed as a transitive�...
"Used to" expresses the idea that something was an old habit that stopped in the past. It indicates that something was often repeated in the past, but it is not usually done now. Examples: Jerry used to study English. Sam and Mary used to go to�...