this is me after a loss of 25kg 中的“a ”是什么意思,&用法?

this is me after a loss of 25kg 中的“a ”是什么意思,&用法? whose pencil-box is this回答 a,my b,mine c,me d,l Can you tell me why___good to take a walk after supper?A.is this B.is it C.it is D.is that l have been here__last year.excuse me,is this cost__sale.the old mam has lived here__20 years.l bought this handbag____my sister.there is a river____the two villages. 英文翻译中文:This is Mr Wang.He's a teacher.That's me.l'm a pupil. for me ,this is a happy t_____ 再问下几个句子是什么意思：1.Is everybody having a good time?3This is a small gift.2.Get well soon.3.This is a small gift form me.l hope you like it.4.l wrote a poem. This month is after October China is a () country.()!This present is for me. What is this?----It is a (l ) for Jane here is a word.the letter Cis before L.U is after O and after L.the letter d is after U.the letter 作文,This is me Excuse me ,l want to see a doctor .is this bus for the hospital?Yes,it is.______ ______ stops are there to the hospital she has been after me to take a class like this for a 急呀,Mr.Black this is our language lab.Would you like to go in and have a look?A.help you self B.This way,please C.Follow me D.After you what does it mean by say after me?say after me is a song,what's its meaning? This is a present ___ me.A.forB.fromC.to This is a terrible place for a man like me.