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。