—Your dress looks very nice, what’s it made________?— Silk, and it is made ________ Hangzhou.A. from, in B. of, in C. of, by
________ he study? --- In a middle school
Michael works _______ a farm. His sister works ____ a factory.
My aunt Lisa is _______ office worker.
---_______? ---He’s a doctor.
-- Whose pants are they? ---__________.