(Even though) he (had been studying) English for three years (before) he came to

游客2025-03-17  2

问题 (Even though) he (had been studying) English for three years (before) he came to England, it is still difficult for him to make himself (understand).

选项 A、Even though
B、had been studying
C、before
D、understand

答案 D

解析
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