I must go home now.I have been away from home____

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I must go home now.I have been away from home____
A since 9 o'clock B for two hours ago C for 9 o'clock D at 9 o'clock

答案：A
解析：since 后面接时间点,如选项A
for后面接时间段 ,所以B应该去掉ago,C后面接了时间点.错误
at后面接时间点一般表示动作正在进行,用进行时态,句子使用了完成时态,选择A
since 一般用于完成时态中
翻译：我现在必须回家了,我自打九点就离开家了
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------

I must go home now. I have been away from my home for tow months,so I ___ my par have been away home还是have been away from home? I've must have been blind not to see you look away from me Must I go home now?;Need I go home now?否定肯定回答 must i go now? ‘I must go home now,’ he says to _______(he). I must go home now ,let us meet I must go home now.改成一般疑问句, Must.I.go.home.now?改否定句 Must I go home now ? 做否定回答 . I must go now.I have no other __________.(choose)