The teacher______(stand)in front of the blackboard now.选填理由
问题描述：
The teacher______(stand)in front of the blackboard now.选填理由
答
is standing now表明要用现在进行时态。
答
is standing
现在进行时be加ing
如果帮到你，请记得采纳，O(∩_∩)O谢谢
答
is standing
now 提示你要用现在进行时态,因此is standing