How to Say "I'm good at basketball." in Korean?

"I'm good at basketball." in Korean is 농구 잘해요. (nonggu jalhaeyo)

케이크 만들어요. (keikeu mandeureoyo) - I make a cake.
케이크 만들고 있어요. (keikeu mandeulgo isseoyo) - I'm making a cake.
지금 뭐 만들고 있어요? (jigeum mwo mandeulgo isseoyo) - What are you making now?
딸기 (ttalgi) - Strawberry
딸기 케이크 (ttalgi keikeu) - Strawberry Cake
딸기 케이크 만들고 있어요. (ttalgi keikeu mandeulgo isseoyo) - I'm making a strawberry cake.
구월 (guwol) - September
엄마 생일 (eomma saengil) - Mom's Birthday