Tom received an invitation to dinner, and with his work ____, he gladly accepted it.

Attention__________ on his painting, he even didn’t notice me come in.

With a lot of difficult problems ____, the newly -elected president is having a hard time.

With nothing ________ to burn, the fire became weak and finally died out before the firefighters came.

All attention     on the beautiful girl, the boy didn’t notice the teacher enter the classroom.