问题 填空题
区分下列单词,并选词填空。

skate      skating      ski      skiing

1. I like to _____________ on the snow.
2. I'm _____________ on the ice.
3. I like to _____________ on the ice.
4. I'm _____________ on the snow.
答案

1. ski  2. skating  3. skate  4. skiing

单项选择题
单项选择题