1. correctly
Did they hear correctly?
If I remember correctly, Tom used to be a carpenter.
If you want to sound like a native speaker, you must be willing to practice saying the same sentence over and over in the same way that banjo players practice the same phrase over and over until they can play it correctly and at the desired tempo.
Please address your mail clearly and correctly.
Everyone can help ensure that sentences sound correct, and are correctly spelled.
Alex would correctly describe the object and color, even if he had never seen that object before.
Foreign accent syndrome is an as-yet unexplained medical condition where the patient can no longer pronounce his mother tongue correctly and seems to have a foreign accent.
Have accounting principles been applied correctly?
By that, Boeing means that there may also have been other problems, but that an accident could have been avoided if the crew had done their job correctly.
The vast majority of high school students I know can't read an unknown word and pronounce the letters in the right order, let alone pronounce it correctly or naturally.
First, they should have right ideas of things, ideas that are based on careful observation, and understand causes of effects and their significance correctly.
Dennis spelt all the words correctly in his word test and got full marks.
Он ответил правильно|He answered correctly