When Jim’s mother came in, he _______ his homework.A. is doingB. has doneC. was doing
Where your pen pals?
–-- Can you tell me __________ ? ----Sorry , I don’t know . I was not at the meeting , either .
Many boys and girls are made _____ what they’re not _____.
--- How often do you phone your family?---_______?
Some robots are ______ to do the same things ______ people.