The grass was covered with frost in the early morning.（英译中)

In winter the lake is covered with ice.（英译中)

______the ground covered with ice, the road has become very slippery.A．AtB．AlongC．OnD．With

（课外资料)In the grass, a baby duck was hatched （孵化) out in a college biology lab with

The little valley beneath the ivy－covered hills became ______ with white shirts.A: do

There was no snow, the leaves were gone from the trees, and the grass was dead.

How iPads syncs with computes？A.The iPad allows users to purchase and download songs fro