问题
选择题
How can you expect him to make any improvement________ you never give him a chance to have a try?[ ]
A. unless
B. when
C. until
D. even if
答案
答案：B
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How can you expect him to make any improvement________ you never give him a chance to have a try?[ ]
A. unless
B. when
C. until
D. even if
答案：B