Remove the red wavy line method under the text one:
Step one: The options are found in the File tab,
Step Two: Open the word option to find the proofing option.
Step three: Open the Proofing tab. A Word Options window opens, and we select the proofing item, then, on the right side of the window, when you correct spelling and grammar in Word, check spelling as you type and mark syntax errors as you type, the system automatically checks the two items in the "exceptions" group below and appears dimmed. That is, we can no longer change the state, we just click the "OK" button.
Step four: When you return to Word in the sample, you can see that the red line is gone.
Remove the red wavy line method under the text two:
Step: You can open the Review tab, and spelling and grammar select all. It's OK.