作业帮peter ,i haven't seen you for a long time.oh,i （ ）a book these days.A.am writing B.have written C.wrote
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peter ,i haven't seen you for a long time.oh,i （ ）a book these days.A.am writing B.have written C.wrote
peter ,i haven't seen you for a long time.oh,i （ ）a book these days.
A.am writing B.have written C.wrote
peter ,i haven't seen you for a long time.oh,i （ ）a book these days.A.am writing B.have written C.wrote
A
A
A
A.am writing
B完成时