题目内容
The person in ________ charge of the program was at ________ complete loss when the incident happened.
| A.不填;不填 | B. |
| C.the; 不填 | D.the; a |
B
答案:B。 in charge of固定短语“负责任”;at a loss 固定短语:“茫然不知所措”。
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