Let's find some chairs____in which__to sit.A.which B.in whichin which to sit其实是in which we are going to的省略其实就是定语从句的省略 因为这个句子sit后边没有介词 所以先行词which前边需要加介词...He got angry just ____some spoke ill of him.A.for B.since C.because D.asbecause他生气时因为有人说他坏话