问题
选择题
| By the time you have completed the essential training, you _____ exposed to virtually every new feature of the course. |
| A. are B. will have been C. have been D. will be |
答案
答案：B
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| By the time you have completed the essential training, you _____ exposed to virtually every new feature of the course. |
| A. are B. will have been C. have been D. will be |
答案：B