描述冬季活动的进行时表达 — 英语词汇题
题目
用所给动词的适当形式填空（现在进行时：am/is/are + 动词-ing），描述孩子们正在进行的冬日活动。1. Listen! The boys ________ (skate) on the ice. 2. Look! Amy ________ (make) a snowman now. 3. —What's Tom doing? —He ________ (ski) on the hill. 4. The children ________ (throw) snowballs at the moment.