【河北省2015年中考英语试题】 We're proud that China _________ stronger and stronger these years.
We built this factory ______ top speed and minimum(最少的) cost.
There is a big and beautiful lake ______ the foot of the hill.
We go _____ duty at 8 a.m.
Li and I arrived ______ Heishan country safe and sound, all is well. Don’t be worry.
The kids are doing some experiment ______ the farm in the country.