问题
选择题
Up to now, the program ______ thousands of children who would otherwise have died.
A．would save
B．saves
C．had saved
D．has saved
答案
答案：D
这题考查时态，时间是：Up to now“直到现在”所以用现在完成时，句意是：直到现在，这个项目挽救了上千名儿童的命，否则他们就会死掉。选D。