There is no doubt that ________ a goal, one needs not only knowledge but also good personalities.

The manager had no plan to travel abroad with many problems ________.

The Winter Olympic Games ________ in Sochi, Russia in February, 2014 was also a great party for athletes from different countries.

When in trouble, many teenagers go to their friends             for advice.

_________ her son outside the school gate, she drove straight to her work place.

The president is planning to increase the number of the students _________  to the university next year.

. --Can you smell something _________  in the house?
--Oh! I forgot to turn off the gas cooker!

With more traffic problems arising, more strict rules have been set, which makes it difficult for people to succeed __________the driving test

Most morning reading classes should be made use_______ English better.

His conclusion, ______ on careful research, was acceptable.