单选题
You (will not able) to pass the examination (unless) you work (harder) than you (do) now.
A. will not able B. unless C. harder D. do
A
B
C
D
【正确答案】
A
【答案解析】
[解析] 应改为will not be able to。able是形容词，不能直接跟在will后面，需要加上be。
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