Keep on(work) ______ hard, or you’ll fall behind other students.working本题考查固定搭配。

游客2024-07-03  11

问题 Keep on(work) ______ hard, or you’ll fall behind other students.

选项

答案 working

解析 本题考查固定搭配。keep on doing sth. 意为“坚持做”。
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