A new study of HIV-infected people in Haiti indicates that starｔing treatment early could save many patients who might _______ die of AIDS.

______ acupuncture developed, the simple “bian stones” were replaced first by stone  and pottery needles, and ________ by metal needles.

Trees are good for human being. We can’t plant them __________ many.

There was no news；＿＿＿＿, she did not give up hope. 

All the travelling fare, unless specifically stated _________, includes admission charges to the attractions, shows and exhibitions we visit.