### 2. 单项选择 —Where is Tom? —Look! He ______ a book under the tree. ### 3. 单项选择 Listen! Someone ______ for help in the river. Let's call the police quickly. ### 4. 单项选择 Please be quiet. The baby ______. ### 5. 单项选择 It’s six o’clock in the evening. My (答题总人数：0)