They use computers to keep the traffic _____ smoothly.
It is reported that many a new house_________at present in the disater area.
--------May I take this book out of the reading room? ------No,you_________. You read it in here.
Studies show that people are more_________to suffer from back problems if they always sit before computer screens for long hours.
. I have to see the doctor because I_________a lot lately.
John thinks it won't be longhe is ready for his new job.