单项选择题It is essential that these application forms back as early as possible.
单项选择题Duty is an act or a course of action that people () you to take by social customs, law or religion.
A. persuade B. request C. instruct D. expect
单项选择题—I thought you wouldn't mind. — Well, as a matter of fact, I don't, but you ______ me first.
单项选择题All of them try to use the power of the workstation ______ information in a more effective way.
单项选择题We()on this project for four hours. Let's have a rest.
A. are working B. have been working C. worked D. had worked
单项选择题Galileo lived in the City of Pisa, ______ there is a leaning tower about 180 feet ______.
单项选择题She didn't see me come and went on ______ her newspaper.
单项选择题The air of countryside is cleaner than ______ of city, but I don't like to live ______ far.
单项选择题Madame Curie's ______ encouraged many women to study science, and many of them ______.
单项选择题Who is it up ______ decide ______ whether to go or not