---Hi,Joan．I haven’t seen you for weeks．What __________ recently？

---Carrying on some research on wildlife．

A．have you been doing    B．have you done    C．Were doing    D．did you do

1、A

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---Hi,Joan．I haven’t seen you for weeks．What __________ recently？

---Carrying on some research on wildlife．

A．have you been doing    B．have you done    C．Were doing    D．did you do

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