—Your grandpa climbed the hill so ________ that I couldn’t keep up with him.
—He takes exercise every day.
quickly
difficultly
patiently
differently
The math problem is too difficult ,I can’t__________ .
Many old men prefer __________ in a peaceful countryside.
Mary likes learing English,______ she doesn’t like learning math at all.
------I’m taking the driving test next Sunday. ------________!
______ trees are cut down in the forests every year.