-- 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
These flowers are very _______. You can see them everywhere in my town.
The robots can ___ people under the buildings and can also ___ the sick people.
We will plant _______ trees next year.
There ______ a football game next week.
I know my teacher ______ cares about me.