Can people able to forget / stay away from their first love ?

no never I think so

Explanation:

Avoiding someone you love, whether you're avoiding them in person, online, or even just in your own thoughts, can be done by changing your mindset and staying focused. By staying away from places they frequent and hiding their posts on social media, you'll be much more successful in avoiding them.

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)

for me this my answer o fortunately, they did not notice, and i could pretend not to care.​   i hope this you