1.We must listen and speak as much as possible _______ our English.A.improve B.to improve C.improving D.improves2.The foreign teacher ______ Nanjing for more than three years.A,came to B,has arrived in C,has been in D,has come to 3.Today's trains tra

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1.Wemustlistenandspeakasmuchaspossible_______ourEnglish.A.improveB.toimproveC.improvingD.improves2.T

1.We must listen and speak as much as possible _______ our English.A.improve B.to improve C.improving D.improves2.The foreign teacher ______ Nanjing for more than three years.A,came to B,has arrived in C,has been in D,has come to 3.Today's trains tra
1.We must listen and speak as much as possible _______ our English.
A.improve B.to improve C.improving D.improves
2.The foreign teacher ______ Nanjing for more than three years.
A,came to B,has arrived in C,has been in D,has come to
3.Today's trains travel ______ about 240 kilometres an hour.
A.on B.at C.in D.of

1.We must listen and speak as much as possible _______ our English.A.improve B.to improve C.improving D.improves2.The foreign teacher ______ Nanjing for more than three years.A,came to B,has arrived in C,has been in D,has come to 3.Today's trains tra
1.B ( to do sth.动词不定式表目的)
2.C ( for more than three years 超过3年,是现在完成时的时间状语,动词要用可延续性动词,而arrive/come是点动词,不能和for搭配)
3.B ( at + 速度,“ 以 每小时240公里的速度”)

1.选B, 动词不定式表目的。
2.选C, for more than three years是一段时间,前面的谓语动词需用延续性动词,而arrive和come均为结束性动词,所以选C。
3.选B,具体的速度前用介词at.