John is not a man to count on, and it is very likely that the work ____ by the time he arrives here.

Look! The houses _________.

 I first met Lisa three years ago. She _____ at a shop at the time.

—Are you still very busy？—Yes，I ______ the report for the manager and it won’t take long．

Taiyuan, a city in North China, was struck by a heavy snowfall last week, ______ serious traffic problems.