【正文】 was doing9．Betty can’t join us in the game. She ________ the classroom.A．has cleaned B．was cleaning C．has cleaned D．is cleaning10．—Tom, please give me a hand in moving the piano. —Sorry. I ________ my car.A．repair B．repaired C．a(chǎn)m repairing D．have repaired11．The zoo keeper is worried because the number of visitors ________ smaller and smaller.A．bee B．a(chǎn)re being C．is being D．have bee12．— Where are the officers? — Look! They ________ the elephant in the palace now.A．touched B．will touch C．touch D．a(chǎn)re touching13．—Candy, could you please help me do the dishes?—Sorry, Mom. I ________ my homework.A．do B．did C．a(chǎn)m doing D．have done14．— Lena, I guess you were in a hurry this morning. You ________ your sweater inside out.— Oh my god, I’ll have it changed immediately.A．wore B．a(chǎn)re wearing C．were wearing D．have worn15．—It39。t e yet. I ___________for her.A．have waited B．a(chǎn)m waiting C．was waiting D．waited16．—Yesterday I received a letter from .—You did? I hear he________for America next year.A．has left B．leaves C．left D．is leaving17．— Hurry up, Mary. The movie has already been on for ten minutes. —Wait a moment. I ________ some snacks in a shop.A．buy B．bought C．a(chǎn)m buying D．have bought18．—I _____to Beijing tomorrow. —Have a good trip!A．flies B．fly C．a(chǎn)m flying D．flew19．—Tom, where39?？疾閯?dòng)詞時(shí)態(tài)?？疾閯?dòng)詞時(shí)態(tài)。故選B。我可以和勞拉講話嗎？——對(duì)不起，她不在家?？疾閯?dòng)詞時(shí)態(tài)。我可以和勞拉講話嗎？——對(duì)不起，她不在家。考查動(dòng)詞時(shí)態(tài)。根據(jù)上文“Hello. May I speak to Laura, please?”及下文“Sorry, she39。主語(yǔ)是she，be動(dòng)詞用is。3．D【詳解】句意：——莉莉，你父親在哪里？——他正在廚房做飯。根據(jù)“Where’s your father, Lily?”可知，此處是詢問(wèn)當(dāng)前的情況，表示正在做某事，用現(xiàn)在進(jìn)行時(shí)，故選解析：D【詳解】句意：——莉莉，你父親在哪里？——他正在廚房做飯。根據(jù)“Where’s your father, Lily?”可知，此處是詢問(wèn)當(dāng)前的情況，表示正在做某事，用現(xiàn)在進(jìn)行時(shí)，故選D。他們正在開(kāi)派對(duì)。根據(jù)前句“The noise es from the boys.”語(yǔ)境可推知，后句中動(dòng)作正在進(jìn)行，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式解析：B【詳解】句意：噪音來(lái)自那群男孩?？疾閯?dòng)詞時(shí)態(tài)。故填B?！@就來(lái)。根據(jù)“Tony, hurry up! We…for you now.”可知，此處強(qiáng)調(diào)動(dòng)作正在發(fā)生，用現(xiàn)在進(jìn)行時(shí)，故選解析：D【詳解】句意：——托尼，快點(diǎn)！我們現(xiàn)在在等你。考查現(xiàn)在進(jìn)行時(shí)。6．C【詳解】句意：請(qǐng)保持安靜?？疾閯?dòng)詞時(shí)態(tài)辨析。解析：C【詳解】句意：請(qǐng)保持安靜?？疾閯?dòng)詞時(shí)態(tài)辨析。7．B【詳解】句意：——什么聲音，山姆？ ——我弟弟正在玩他的玩具車。根據(jù)“What’s that noise, Sam?”判斷，此處應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是：be（am/解析：B【詳解】句意：——什么聲音，山姆？ ——我弟弟正在玩他的玩具車。根據(jù)“What’s that noise, Sam?”判斷，此處應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是：be（am/is/are）+動(dòng)詞的現(xiàn)在分詞。8．C【詳解】句意：——嗨，大明?？疾閯?dòng)詞時(shí)態(tài)。你在忙什么？——我正在做一個(gè)關(guān)于家族史的項(xiàng)目。根據(jù)“What are you up to”可知，答語(yǔ)要用現(xiàn)在進(jìn)行時(shí)，表示現(xiàn)在正在進(jìn)行的動(dòng)作，結(jié)構(gòu)為am/is/are doing，故選C。她正在打掃教室。根據(jù)上句“Betty can’t join us in the game”，此處指的是現(xiàn)在發(fā)生的事，故應(yīng)用現(xiàn)在時(shí)，且根據(jù)解析：D【詳解】句意：貝蒂不能參加我們的比賽。考查現(xiàn)在進(jìn)行時(shí)。故選D。——對(duì)不起。考查時(shí)態(tài)。——對(duì)不起?？疾闀r(shí)態(tài)。11．C【詳解】句意：動(dòng)物園管理員很擔(dān)心，因?yàn)橛慰蛿?shù)量越來(lái)越少。根據(jù)前句“The zoo keeper is worried”的語(yǔ)境可知，后句動(dòng)作應(yīng)是解析：C【詳解】句意：動(dòng)物園管理員很擔(dān)心，因?yàn)橛慰蛿?shù)量越來(lái)越少。根據(jù)前句“The zoo keeper is worried”的語(yǔ)境可知，后句動(dòng)作應(yīng)是正在進(jìn)行，故時(shí)態(tài)應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式為：be doing，故排除A、D項(xiàng)；the number of，表示“……的數(shù)量”，作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞用單數(shù)形式，故排除B項(xiàng)。12．D【詳解】句意：——軍官們?cè)谀膬?？——瞧！他們正在宮殿里摸象。look“看”用于提醒，后面的句子需用現(xiàn)在進(jìn)行時(shí)“be doing”結(jié)構(gòu)?？疾閯?dòng)詞時(shí)態(tài)辨析。touch摸，主語(yǔ)they是復(fù)數(shù)人稱，系詞需用are，故選D。我在做作業(yè)。根據(jù)語(yǔ)境可知，此時(shí)不能幫媽媽洗碗，是因?yàn)檎谧鲎鳂I(yè)，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式為：be doing。我在做作業(yè)。根據(jù)語(yǔ)境可知，此時(shí)不能幫媽媽洗碗，是因?yàn)檎谧鲎鳂I(yè)，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成形式為：be doing。14．B【詳解】句意：——Lena，我想今天早上你很匆忙?！?，天吶！我馬上把它換過(guò)來(lái)。wear穿；根據(jù)“I’l