( ) We must ______ and wait at a red light. A. stopping B. stops C. stop
There a forest in the nature park. A. IsB. areC. be
My bedroom has air-conditioner A. aB. anC. The
---is the trash bin? ---It's near the table. A. WhatB. WhoC. Where
There blue curtains. A. areB. isC. am
There a doll on the bed. A. areB. isC. am