-- Are you writing a letter? -- _____ .
A. Yes, I do. B. No, I’m not. C. No, I don’t.
This stone tool was made ________ Peking Man.
A．with B．by C．in
We saw some ________ on the wall.
A．drawings B．drawing C．draws
They got water ________ the river nearby.
A．with B．by C．from
He lived ________ a big cave.
A．inB．onC．at
Peking Man lived about 300，000 ________ 500，000 years ago.
A．from B．toC．for