△=3；□=1；○=2
1917年1月和2月，《新青年》分别发表了胡适的《文学改良刍议》和（）的《文学革命论》，标志着文学革命的开始。
It's time for supper now. Let's it.[ ]
A. stop having
B. stop to have
C. to stop to have
D. stopping to have
