"It's raining heavily,"said Bob,(looking) out of the window.使用looking的原因是什么拜托各位大神
The police found there ___ much blood and pieces of glass on the scene of the traffic accident when they arrived.A.being B.is C.was D.were 选A为什么不可以?Two-thirds of the coins dug on the island ___ from 221BC.A.dates B.date C.is dated D.were dated 为什么选B?"It's raining heavily,"said Bob,(looking) out of the window.使用looking的原因是什么