—Where are my keys?—I don’t know. on the desk?A、Is it B、Are they C、Are you
Jim was listening to music _______his sister was playing with a toy.
---Mom, why are you _________my plan to travel around the world?---Because you’re too young to look after yourself.
---Will books be on paper in 100 years?---_______. They will be computers.
---Mary, how much did you ______ the new watch?---300 yuan.
---Linda, how is your physics project _______?---Very well. I’ll finish it tomorrow.