Withpricesnow(),now(),whoknowswhatitwillcostnextyear?A.torise;fallB.rising;fallingC.torise;fallingD.rising;tofall选择B．但不知道原因

Question

With prices now (),now(),who knows what it will cost next year?
A.to rise ;fall
B.rising;falling
C.to rise;falling
D.rising;to fall
选择B．但不知道原因

Answer 1

这时应该用分词,但这里只有现在分词,没有过去分词,所以必须用rising、falling,且这个句子的时态是将来时,不能用过去分词