( ) My mother works _____ a bank . A. in B. on C. at
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.in B.on C.at
Peking Man lived about 300,000 ________ 500,000 years ago.A.from B.to C.for
What's your mother's ________?A.work B.do C.job