I my homework since lunch time．I’m very tired now. A．have been doing B．have done
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I________ my homework since lunch time．I’m very tired now.
A．have been doing
B．have done
C．have been done
D．did
试题答案
答案：A
提示：从中午到现在一直在做作业，现在完成进行时表示一直在做什么
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