根据句意或首字母填空 the old man looks much older than before b_____of his illness
根据句意或首字母填空 the old man looks much older than before b_____of his illness
because
由于他的病,这个老人看上去比以前更老了。
根据句意或首字母填空 the old man looks much older than before b_ecause____of his illness
because of由于