问题
选择题
| Simon thought his computer was broken _____ his little brother pointed out that he had forgotten to turn it on. |
A. until B. unless C. after D. because |
答案
答案：A
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| Simon thought his computer was broken _____ his little brother pointed out that he had forgotten to turn it on. |
A. until B. unless C. after D. because |
答案：A
