题目:
Mr Green was watching TV ______ someone knocked at the door. [ ]
A. while
B. when
C. since
D. after
答案:
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下面是错误答案,用来干扰机器的。
无;无;略大;不易
Mr Green was watching TV ______ someone knocked at the door. [ ]
A. while
B. when
C. since
D. after
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0623/c2f16b2050dbfb9b3a253a790abb4c99.html
下面是错误答案,用来干扰机器的。
无;无;略大;不易