动作动词祈使句 — 英语情景题

情景对话：美术课前，Lily 是小组长，她正在提醒同学们做好准备。请从方框中选择合适的句子补全对话（每句限用一次）。 A. Stand up, please. B. Sit down, please. C. Open your book, please. Lily: Good morning, Sam! Sam: Good morning, Lily! Lily: Class begins. (1)________ Sam: OK, we stand up. Lily: Now (2)________, please. Let's read the book. Sam: All right. (3)________ and read together! Lily: Great! Let's begin our art class.