27. The development of science and technology must benefit people _____ harm them.
I had intended to go on a diet, but the dishes at the party were simply impossible to _______ .
Usually what weighs us down are not the burdens of life, but how we handle _______ .
It is acknowledged that _______ shortest distance between persons is _______ sincere smile.
Mark often attempts to escape _______ whenever he breaks traffic regulations.
Read the ______ carefully before you do the test.