问题补充:
. As a teacher, he has never given his students so difficult a problem they can’t work out.
A. if
B. that
C. when
D. As
答案:
A. if
B. that
C. when
(答案→)D. As
解析:可联系答.案.网客服索取。
时间:2018-06-21 05:41:35
. As a teacher, he has never given his students so difficult a problem they can’t work out.
A. if
B. that
C. when
D. As
A. if
B. that
C. when
(答案→)D. As
解析:可联系答.案.网客服索取。