He has nothing to do but ( ) the criminals robbing passers-by

He has nothing to do but ( ) the criminals robbing passers-by of the their money.
A、stopped
B、stopping
C、to stop
D、stop
【正确答案】:D
【题目解析】:原则“有do无to,无do有to”。前面没有do的时候,要跟谓语动词保持一致。见例句:1. I have nothing to do but sleep all the time.(有do无to) 2. He did nothing but wait.(有do 无to) 3.I have nothing to deal with but to read the newspaper.(没有do要加to) 4 He enjoys nothing but listening to music.