I had promised to send him an email I got home but I was so busy that I forgot t
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I had promised to send him an email_______ I got home but I was so busy that I forgot to do so .
A.while
B.until
C.the moment
D.ever since
试题答案
C
这题考查连词的用法：the moment“一…就…”，句意是：我许诺一到家就给他发一份E-mail，但我太忙忘了。选C。