-There ______ many trees at the foot of the mountain.--But now they are slowly disappearing because of human activities.A.is used toB.used toC.used to be
We couldn't see the road clearly _____ the heavy snow.
---_______does your mother watch talk shows? --- Once a week.
We were _____________ when we heard the _________ news yesterday.
— There’s ______________ with my eyes. —Don’t worry. Let me help me.
—Where did you go on vacation? — .