问题
_____, I could not memorize the text
A:However hard did I try
B:However hard I tried
C:However I tried hard
D:However I had tried hard
B:However hard I tried
C:However I tried hard
D:However I had tried hard
正确答案是：
同类题型
Tong is afraid,becausehe was terrified by an air accident．
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Peter was so excitedhe received an invitation from his friend to visit Chongqing.
_____ of my parents was at home last Sunday. So I _____ cook by myself.