问一个词性转换He waited at the ____ for his friend to come downstairs.(receive)为什么是reception 不是receptionist's

问一个词性转换He waited at the ____ for his friend to come downstairs.(receive)为什么是reception 不是receptionist's He waited until his mother arrived=He( )( )until his mother arrived同义词转换 waited可否有形容词词性 He waited __ waited,__ could see nothing and nobody at lastA or;andB but;andC and;butD or;but (Having waited)in line for half an hour ,Tom suddenly realized that he had left his wallet at home为什么不用To have waited 而用Having waited 问两个英语语法题 分词和不定式的1.___ in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.A.To wait B.Have waited C.Having waited D.To have waited这个题讲下先怎么排除含有不定式（或分 词性转换 （）______the school,he saw his parents _______for him at the school gateA.At reaching;waited B.On arriving;waitingC.At arriving;waited D.On reaching;waiting He has some ____ pictures of horses.(many)词性转换 He couldn't be there at that time because I waited for him all day. 请教英语好的朋友,一个词性转换的题目Whenever he encounters a problem,he is _____ in deep and careful thinking.(absorb) .We ____ for tom at ten last Sunday.He often kept us ______.a.were waiting,waiting b.were waiting,wait c.waited,waiting d.waited,wait He waited and waited and at last a gentleman __________ came forward.A.dressing the black suit B.in a black suit C.with the black suit 问两个英语同意句转换.1：I waited there until you called me.2：Therewas no reply. home 词性转换home 所有 词性转换 know(adj.)词性转换词性转换 一个动词变成过去式或现在分词是不是词性转换 He ____for his mother at seven o'clock yesterday. A.was waiting B. waited 选哪个 说清楚语法知识点