Don’t _____________again .A.come trees B.climb trees C.climb tree
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
What's your mother's ________? A.work B.do C.job
What class are you ________? A.at B.in C.on