问题
选择题
27. How can you expect him to make any progress ____ you never give him a chance to have a try?
A．when
B．unless
C．even though
D．until
答案
答案：A
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27. How can you expect him to make any progress ____ you never give him a chance to have a try?
A．when
B．unless
C．even though
D．until
答案：A