问题
选择题
I wonder why Jenny ____ us recently. We should have heard from her by now.
A．hasn’t written
B．doesn’t write
C．won’t write
D．hadn’t written
答案
A
前句中recently与事句中动词民用的语气为重要提示：We should have heard from her by now.="We" haven,t heard from her by now此处讨论最近该发生而没发生的事，用现在完成时态：…hasn’t written us recently.