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C.had worked D.would work【答案】C【解析】句意:O39。Shea在北京主持Joy FM節(jié)目前,他在香港工作了10年了。根據(jù)Before O39。Shea hosted the Joy FM program in Beijing和for ten ;故選C14.Her son Coke, but now he milk.A.used to drink。 is used to drinking B.used to drinking。 drinksC.is used to drinking。 used to drink D.was used to drink。 is drinking【答案】A【解析】【詳解】句意:她兒子過去常喝可樂,但現(xiàn)在他習(xí)慣喝牛奶。used to do過去常常做;be used to doing sth習(xí)慣于做某事;drinks喝,第三人稱單數(shù)形式;is drinking現(xiàn)在進(jìn)行時(shí),根據(jù)轉(zhuǎn)折詞but,可知前句表示過去喝可樂,后句表示習(xí)慣于喝牛奶,故選A。15.This medicine _______ millions of people’s lives since it was put into use.A.is saving B.will save C.has saved D.had saved【答案】C【解析】句意:這種藥物自從投入使用以來已經(jīng)挽救了數(shù)百萬人的生命。since后跟從句,表示“自……以來”,說明的是現(xiàn)在的狀況,判斷用現(xiàn)在完成時(shí)態(tài),故答案為C。16.Someone ______ at the door. Can you open it?A.knocks B.knockedC.is knocking D.was knocking【答案】C【解析】試題分析:句意:有人在敲門,你可以去開一下嗎?knock敲,knock at the door是一個(gè)固定的短語,意思是敲門。根據(jù)句意和這個(gè)情景可知,現(xiàn)在有人正在敲門,故應(yīng)該用現(xiàn)在進(jìn)行時(shí),故選C。A是一般現(xiàn)在時(shí)第三人稱單數(shù)形式;B是一般過去時(shí);D是過去進(jìn)行時(shí)??键c(diǎn):考查動(dòng)詞時(shí)態(tài)。17. Did you have a discussion with him about the matter? No. When I saw him, he________ his history project busily.A.has prepared B.prepares C.was preparing D.prepared【答案】C【解析】句意:——你和他關(guān)于那個(gè)問題討論過了嗎?——沒有。當(dāng)我看見他時(shí),他正在忙碌地準(zhǔn)備歷史項(xiàng)目。When引導(dǎo)的時(shí)間狀語從句,用一般過去時(shí),主句用過去進(jìn)行時(shí)was/were doing,故選C。18.—Where is Mrs. Wu? —She _______ the countryside to be a volunteer teacher. She will stay there for a year.A.has been to B.came to C.has gone to D.has e to【答案】A【解析】【詳解】句意:——吳太太在哪里?——她到農(nóng)村去當(dāng)一名志愿者教師。她將在那里呆一年??疾楝F(xiàn)在完成時(shí)態(tài)。go去,e來;都是短暫形動(dòng)詞;e與句意不合,可排除BD兩項(xiàng)。has been to 曾經(jīng)去過某地,現(xiàn)在已經(jīng)回來了;has gone to 曾經(jīng)去過某地,到現(xiàn)在還沒有回來。根據(jù)She will stay there for a year.,可知選A。19.Mary with her parents to Hong Kong. They’ll stay there for two weeks.A.have been B.have gone C.has been D.has gone【答案】D【解析】【詳解】句意:瑪麗和她的父母一起去了香港,他們打算在那里待一個(gè)星期??疾橹髦^一致和現(xiàn)在完成時(shí)。根據(jù)后面They’ll stay there for two ,可知瑪麗和她的父母待在香港兩周了,一起去了香港,并且還沒有回來,所以用have/has gone to;have/has been to 則表示去過某地(已經(jīng)回來);主語后面由with結(jié)構(gòu)時(shí),謂語動(dòng)詞由前面的主語決定單復(fù)數(shù),根據(jù)主語Mary判斷用助動(dòng)詞has.故選D?!军c(diǎn)睛】現(xiàn)在完成時(shí)的標(biāo)志詞already(肯定), yet(否定,疑問), just, before, re