Would you mind _______ the window for me? I feel a little cold.
—I think recycling books and paper is useful.—________
—Where is David?—I think he________Australia.
—Have you packed the camera yet?—Yes,of course.I________it last night.
Homo erectus pekinensis(北京人)________in Zhoukoudian Village,on the Longgu Mountain,Fangshan District,Beijing.
Grandma________us stories when we were very young.