1、Thepolicemanwassostrongthatheknockedtherobbertheground.A.offB.onC.toD.at2、Itmakesallthedifference.还是Itmakesaoothedifferences,有没有“s”?3、.OnSaturdays,Mrs.Leeusuallygoestothemarket,somegr

Question

1、The police man was so strong that he knocked the robber ______ the ground.
A.off
B.on
C.to
D.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
D.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~

Answer 1

第三题goes,buys,and visits 构成并列,表一系列的动作,所以统一用过去时.基于这个原因,答案应选B而不是C.若把逗号去掉则应选D.此时to表目的.但记住逗号一定要去掉!