It is the prevention of disease______its successful treatment that has led to the rapid increase of the world’s population.
.------ You seem unhappy today, Jane. ______ ------ I lost my new bike yesterday.
----- Are you sure you really want it for watching the Navy celebration in Qingdao? ----- _______, I’m willing to pay ______ you ask for.
The order came that the medical supplies______to Beijing for the H1N1 flu soon.
Seldom______computer games ever since he entered college.
People may have different opinions about Karen, but I admire her. ______, she is a great musician.