【題目】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】D

【解析】句意：迄今為止,這個(gè)項(xiàng)目已經(jīng)救了好幾千名孩子。如果沒有這個(gè)項(xiàng)目，這些孩子早就死了。up to now相當(dāng)于by now,要與現(xiàn)在完成時(shí)連用。

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