A. What souvenirs do you usually buy when travelling?

- I usually buy pretty key rings and tumblers. Or I usually buy unique souvenirs. For example, I bought a Harry Potter scarf at Universal Studios.

------------> ​I usually buy pretty key rings and tumblers. ​I also buy unique souvenirs sometimes. For example, I bought a Harry Potter scarf when I went to the Universal Studios.​

=> Another way: Your sentence is okay and this is another way of saying it.

B. Make these sentences into English. 

-난 당신의 몇몇 디자인을 따라 했어요. : I copied some of your designs. ✔

​

-나의 엄마와 아빠는 많이 다툰다. : My mom and dad argue a lot. ✔

​

-난 너의 의견에 동의해. : I agree with you. ✔

​