一个长方形的长不变，宽增加3厘米，它的周长增加了[ ]
A．3厘米
B．6厘米
C．9厘米
答案：B
I stood there patiently until he ________ his work.
A．has finished
B．would finish
C．had finished
D．finishes
唐代大书法家怀素写有《自序帖》：怀素家长沙，幼而事佛。这个帖的字体是什么呢？
