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Donotdisturbme.IDonotdisturbme.Ilettersallmorningandhavewrittentensofar.[]A.writeB.havebeenwritingC.havewrittenD.waswriting

题目详情
Do not disturb me.I
Do not disturb me.I ________ letters all morning and have written ten so far. [     ]
A.write  
B.have been writing
C.have written  
D.was writing
▼优质解答
答案和解析
B