( )(1)当你向别人介绍海伦是你的妹妹,可以说:A. This is Helen B. Helen is my sister.
--- ______ is my jacket? --- It’s over there. A. where B. whose C. what
______’s five o’clock now. A. this B. these C. it
Look,_____ are my blue jeans. A. this B. these C. it
______ red T-shirt is pretty. A. this B. these C. it
How are your dad and mom? A.They are good. B.They are right. C.They are very well.