-- 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
The number of the teachers in our school ____ over 400, and ____ of them are women teachers.
______ Saturday ________ Sunday is OK. I’ll be free then.
Can you tell me ________ the robot that has caught a virus?
Your uncle will come to see you as soonas he ______ here.
At times _______ exercise can make us _______.