21、---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
21、A
科目：初中英語 來源： 題型：
---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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