You can 't work out the math problem unless you --to your teacher carefully .A don't listen B will listenC won't listen D listen选什么

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You can 't work out the math problem unless you --to your teacher carefully .A don't listen B will listenC won't listen D listen选什么

You can 't work out the math problem unless you --to your teacher carefully .A don't listen B will listenC won't listen D listen选什么
You can 't work out the math problem unless you --to your teacher carefully .
A don't listen
B will listen
C won't listen
D listen
选什么

You can 't work out the math problem unless you --to your teacher carefully .A don't listen B will listenC won't listen D listen选什么
D
unless除非 如果不
从句用一般现在时

D
unless除非+do

D listen
这是一个not unless 连接的句子,前面否定了,后面就要用肯定;A、C就肯定不对;
这里没有将来的意思,因此B也不对

D unless 除非的意思, 如果unless是if 的话又不一样的 自己可以比较

选择D. 此句考察UNLESS的用法 ,这句应翻译为只有你认真听老师讲课才能作出数学题。 UNLESS是除非的意思,后用现在进行时。