-- I called you last night , but you didn’t answer.-- Sorry, Grace. I________I am A Singer when the phone rang.A. am watchingB. was watchingC. have watched
This pair of socks _________ $ 5.
My book is here. Where is _____?
I’m ____ you’re right.
The girl in red is __________ sister.
Please ____me at chinalin@sina.com.