Traffic conditions in Beijing ________ for decades. At first people only complained about jams during rush hours,but today every hour is rush hour.
___________ number of foreign guests were invited to the meeting, butof 20 foreign guests didn’t turn up.
These instructions should be made more ___________ , so that the primary school students can understand it.
--- How long have you ___________? --- It’s about ten years since we ___________.
--- Who is the man ___________here? --- Mr. Black.
The stranger stopped and turned around ___________to see is someone was following him.