题文
Tour guides for groups of over ten must be booked ______.
| A.in particular |
| B.in advance |
| C.in addition |
| D.in time |
推荐试卷
Tour guides for groups of over ten must be booked ______.
| A.in particular |
| B.in advance |
| C.in addition |
| D.in time |
试题篮
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