问题
选择题
----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
答案
答案：B
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----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
答案：B