The foreign teacher Mr. Halt has a strange way of writing. Here’s a notice from him, but no clear ______ of what he has written can be made at all.

 ---- Why don’t you try to do exercise to lose weight? ---- I have tried everything but it has made no _____________.

 Due to the widespread ________ of this medical technology，more diseases can be discovered and treated at an early stage.

According to a UN report，one third of the world population have no    to clean drinking water and health care.

He is always ready to help others. That’s one of his _____.