问题
选择题
Students are given a lot of exercises to do, _______ to improve their grades. [ ]
A. aimed
B. aiming
C. to be aimed
D. to aim
答案
答案：B
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Students are given a lot of exercises to do, _______ to improve their grades. [ ]
A. aimed
B. aiming
C. to be aimed
D. to aim
答案：B