[单选题,10分] Go on ____ the other exercise after you have finished this one． A.to do B.doing C.with D.to be doing

[单选题,10分] Go on ____ the other exercise after you have finished this one．
A.to do
B.doing
C.with
D.to be doing

出自：河南财经政法大学-大学英语3

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