Cars moved very slowly in the 1920s,but they ___more quickly than in 1910s.3Q

问题描述:

Cars moved very slowly in the 1920s,but they ___more quickly than in 1910s.3Q
A.did more B.had moved

解答 选择B. 过去完成式 had+过去分词. 但是他们已经比20世纪10年代快.