1、Thepolicemanwassostrongthatheknockedtherobber______theground.A.offB.onC.to***.at2、Itm_.. 1、The police man was so strong that he knocked the robber ______ the ground. A.off B.on C.to ***.at 2、It makes all the difference.还是It makes aoo the differences,有没有“s”? 3、.On Saturdays,Mrs.Lee usually goes to the market,______ some groceries and visits her daughter. A.bought B.buys C.buying ***.to buy 第一题和第三题可以解释得详细一点吗?第三题为什么不可以选C或者D? 第一题和第三题答案上写的分别是C和B~觉得好象不太对~ 展开