摘要： Bob promises to join in the football match he has to help his parents on the farm. A. if B. as C. unless D. when
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Bob promises to join in the football match ______ he has to help his parents on the farm.
A. if B. as C. unless D. when
查看习题详情和答案>>Bob promises to join in the football match ________ he has to help his parents on the farm.
| A．if | B．as | C．unless | D．when |
Bob promises to join in the football match ________ he has to help his parents on the farm.
A．if B．as C．unless D．when
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