I know my friends Jenny and Danny live ____Canada .A. to B. on C. in
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
What class are you ________?A.at B.in C.on
How old ________ your brother?A.is B.are C.does
Where ________ your father now?A.is B.are C.was