单项选择
__________ your books and look at the blackboard.
A. Close B. Close C. Closing D. To close
单项选择
__________ your books and look at the blackboard.
A. Close B. Close C. Closing D. To close
B
【解析】
试题分析：句意：把书合上看黑板。以动词原形开头的句子是祈使句。And连接两个并列的成分，look用动词原形，故Close用原形。结合句意，故选B
考点：考查动词的用法。