We must study hard ________ our English. [ ]A. to improve B. improving C. improved D. improve -八年级英语

题目简介

We must study hard ________ our English. [ ]A. to improve B. improving C. improved D. improve -八年级英语

题目详情

We must study hard ________ our English.

[     ]

A. to improve
B. improving
C. improved
D. improve
题型:单选题难度:中档来源:山东省期末题

答案

A

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