The telephone____by Alexander Graham Bell in 1876.A.is inventedB. was inventedC. were invented
I think you should tell your partner how ______ popcorn.
---May I have ______ piece of bread with butter? I’m not full. ---Certainly. Here you are.
---______will you be back to the office? ---In half an hour.
It’s impossible for us ______ robots like humans now.
There ______ a concert in the gym sometime next week.