Thanks @DaveF1006
Based on the Substantial Presence Test, I think I'm a Resident Alien, so I can e-file my 2020 tax using TurboTax with Form 1040 (instead of a Non-Resident Alien who needs to use Sprintax to file Form 1040-NR), right?
Days I was present in the US
2020: 340 days > 31 days
2019: 362 days
2018: 365 days
Substantial Presence Test: 340+1/3*362+1/6*365=521 > 183
