题目内容
----Are you sure that he is able to do the work well?
---- _______ he could give his mind to it.
A. In case B. If only C. On condition that D. Unless
B
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题目内容
----Are you sure that he is able to do the work well?
---- _______ he could give his mind to it.
A. In case B. If only C. On condition that D. Unless
B