The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Your defensiveness may INDICATE
similar insecurities
The Big Bang Theory Season 10, Episode 18

to INDICATE that you're accepting
Leonard in "as is" condition.
The Big Bang Theory Season 10, Episode 13

recent archeological
studies INDICATE
The Big Bang Theory Season 7, Episode 18

...but sources INDICATE
that 11-year-old Tomas Cantillo...
Breaking Bad Season 3, Episode 12

The seismic sensors INDICATE movement.
Money Heist Season 3, Episode 8