选单词完成对话。

try   knife   yourself   Chinese   sorry

Li Li: Dinner is ready. Your and fork is here. Help , please.

Jack: Thanks. Can you use chopsticks?

Li Li: Sure. Let me show you.

Jack: Let me . Oh, .

Li Li: It's too difficult(困难的)for you.

Jack: Mm. Yummy. I like food. Thank you.