_____to his research work, the professor cared little about any other things.
The film _________ a novel by Sinclair Lewis.
Today,_________ rapid transportation and communication , the whole world seems to be smaller.
The government requested that all the people ___________ in any indoor public area.
Scientists study ___________ human brains work to make computer.
A girl on the bus begin to sing a pop song and soon all the other students _________.