Swimmers must be very strong in order to build up speed because of the high resistance of the water Runners, ____, must struggle against the heavy resistance of the air and ground

ition to the farming they ______ since the1990s, the Smiths have started a small business.

inese sports idol Li Na shocked fans by __________ her racket due to seriousinjuries in September, on the eve of a tournament in Wuhan, her home city.

It was a hard time for those students because of losing the game, but they did not ______ hope.

Have you got any job offers?—NoI _________