问题
选择题
Mr Huang told us to spend as much time as possible ________ our English studies. [ ]
A. to improve
B. improved
C. improving
D. on improving
答案
答案：A
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Mr Huang told us to spend as much time as possible ________ our English studies. [ ]
A. to improve
B. improved
C. improving
D. on improving
答案：A