14.The old man didn’t know _______ when the house caught fire .A.what to do it B.how to do C.how to do it D.what to do 选哪个 为什么

he didn't want to take the old man's He o___ the old man because he didn't know the custom there.首字母填空 the old man didn't know how -----[chat]on the net .could you help him? the old man born! The old man looks ( )is the old man? ( )is the old man? I didn't mind____ all my spare time ____ the sick old man. the old man stood in a s_____ street and didn't know where to go Why didn't you leave with your family the old man said to the boy.改为The old man ...怎么改啊 翻译这个句子：The old man didn't think the parrot was clever,but worth twenty dollars. We visited the old man yesterday.改为否定句：We didn't visit the old man yesterday.We visited the old man yesterday.改为否定句：We didn't visit the old man yesterday.其中我听别人说时态不变原则,那原句是过去式,改后的 we didn`t go home（ ）the old man was sent to twe didn`t go home（ ）the old man was sent to the hositpal A.until B.when C.while D.that The old man __his glasses Who is the old man? The old man[ ][ ][ ]his son The old man has poor____. The old man lives ____charity