题目内容
6. We must keep on hard in the coming year.
A. work B. worked
C. to work D. working
6. D考查keep on的用法。keep on后接认-ing形式。 故选D。
练习册系列答案
相关题目
题目内容
6. We must keep on hard in the coming year.
A. work B. worked
C. to work D. working
6. D考查keep on的用法。keep on后接认-ing形式。 故选D。