题目内容
I ________ him a second letter before I ________ from him.
[ ]
A
.wrote, heardB
.wrote, had heardC
.had written, heardD
.have written, hear
答案:C
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题目内容
I ________ him a second letter before I ________ from him.
[ ]
A
.wrote, heardB
.wrote, had heardC
.had written, heardD
.have written, hear