About 1000 high school students____the distance learning courses since the school was set upfour years ago.A.had takenB.have taken求详解

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 21:49:53
About 1000 high school students____the distance learning courses since the school was set upfour years ago.A.had takenB.have taken求详解
x͒J@_e@C}$$X(Jr~ X؂c6ٛ=UApOo]:>$2L5q_G6m=۲ 9,,=DnS^4!P!1*tpY?|*Vdy\ˍQtmYޞ. `A vN7=:/˯S2Y+^ִ7_&^6, ru=5`4 J.F*j9EB[)(N۫;ݟ?Mu %

About 1000 high school students____the distance learning courses since the school was set upfour years ago.A.had takenB.have taken求详解
About 1000 high school students____the distance learning courses since the school was set up
four years ago.
A.had taken
B.have taken
求详解

About 1000 high school students____the distance learning courses since the school was set upfour years ago.A.had takenB.have taken求详解
B
A的话是用在过去的过去,句中four years ago只代表过去.就是说4年前开始有1000名学生开始学习.
A的话应该把since改成before

B
A的话是用在过去的过去,句中four years ago只代表过去。就是说4年前开始有1000名学生开始学习。
A的话应该把since改成before

A.had taken