【正文】 根據(jù)問(wèn)句“Where’s Kelly, Mum?”可知，是問(wèn)凱莉現(xiàn)在在哪里，所以答語(yǔ)應(yīng)用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)解析：D【詳解】句意：——?jiǎng)P莉在哪里，媽媽? ——她正在臥室里為社區(qū)做海報(bào)。39．D【詳解】句意：目前，南蘇丹的許多兒童正面臨著饑餓的問(wèn)題。故選D。故選C。故選D。故選C。故選A。你能幫我個(gè)忙嗎？——稍等。根據(jù)“Sorry. I...on it”可知此處表示“在說(shuō)話的時(shí)候正在用ipad”，用現(xiàn)在進(jìn)行時(shí)be doing?？疾闀r(shí)態(tài)?？疾閯?dòng)詞時(shí)態(tài)辨析。考查動(dòng)詞的時(shí)態(tài)。故選C。根據(jù)“where is your father now”可知是問(wèn)父親現(xiàn)在正在哪里，由此可知，此句時(shí)態(tài)用現(xiàn)在進(jìn)行時(shí)態(tài)。根據(jù)題干“he…for tomorrow’s exam at home”和語(yǔ)境，可知此處表示他正在家里做準(zhǔn)備，應(yīng)用現(xiàn)在進(jìn)行時(shí)。25．B【詳解】句意：——嗨，湯姆。24．B【詳解】句意：你最好不要走這邊。23．B【詳解】句意：我們組的同學(xué)正在為比賽做最后的準(zhǔn)備。do一般現(xiàn)在時(shí)，原形； am doing現(xiàn)在進(jìn)行時(shí)；did一般過(guò)去時(shí)；根據(jù)“Sorry, Amy”拒絕和對(duì)方一起出去購(gòu)物，可知此處指“正在做作業(yè)”，用現(xiàn)在進(jìn)行時(shí)，其謂語(yǔ)動(dòng)詞構(gòu)成為“be+現(xiàn)在分詞”；故選B。21．B【詳解】句意：——蒂娜，我們出去逛街吧。他正在洗碗。她正在圖書館看書。s dad?”可知，答語(yǔ)“他在澆花”應(yīng)是現(xiàn)在進(jìn)行時(shí)?？疾闀r(shí)態(tài)。考查動(dòng)詞時(shí)態(tài)。故選B。根據(jù)語(yǔ)境及“at the moment”可知，打來(lái)電話的時(shí)候，布朗先生正在開(kāi)會(huì)，時(shí)態(tài)用現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為am/is/are doing。——對(duì)不起?？疾閯?dòng)詞時(shí)態(tài)?？疾楝F(xiàn)在進(jìn)行時(shí)。now現(xiàn)在，是現(xiàn)在進(jìn)行時(shí)的標(biāo)志，需用be doing結(jié)構(gòu)；主語(yǔ)students復(fù)數(shù)人稱，be動(dòng)詞用are，故選C。根據(jù)“It smells so good.”可知，它現(xiàn)在聞起來(lái)非常好，因此表示媽媽正在煮魚，所以用現(xiàn)在進(jìn)行時(shí)，故選B。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?？疾楝F(xiàn)在進(jìn)行時(shí)的用法。根據(jù)問(wèn)句“What’s that noise, Mike?”可知，提到的聲響是現(xiàn)有的，結(jié)合答句中“now”可知，是說(shuō)現(xiàn)在正在進(jìn)行的動(dòng)作，用現(xiàn)在進(jìn)行時(shí)。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。3．C【詳解】句意：——大衛(wèi)，你爸爸在哪里？ ——他正在花園里洗車?？疾閯?dòng)詞時(shí)態(tài)。s not at home. She___________in the library.A．read B．reads C．is reading D．was reading20．—Where is John?—He is in the kitchen. He ________ the dishes now.A．will wash B．is washing C．washes D．washed21．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did22．—Has your aunt finished writing her novel?—Not yet. She ________ it these days.A．wrote B．writes C．is writing D．will write23．The students in our group ________ the final preparation for the match. We are sure to win.A．made B．a(chǎn)re making C．make D．will make24．You had better not go this way. The workers _________ the road.A．have repaired B．a(chǎn)re repairing C．repaired D．will repair25．— Hi, Tom. I can’t find David anywhere. Do you know where he is?—Oh, he ________ for tomorrow’s exam at home.A．prepares B．is preparing C．has prepared D．prepared26．—Lily, where is our father now? Go and get him for lunch. —Just a moment, please. Father ________ a phone call in his room.A．is making B．was making C．makes D．has made27．Xifeng Street is closed today because workers _______ some repairs.A．make B．made C．a(chǎn)re making D．were making28．—Look out! Something ________ down from the tree.—Dear me! It’s too dangerous.A．falls B．fell C．is falling D．was falling29．—Maggie, could you help pick up the phone? It ________.—OK, Mum.A．rings B．rang C．will ring D．is ringing30．—I _______ a book report now. Can I talk to you later?—No problem.A．write B．wrote C．a(chǎn)m writing D．was writing31．—Mary, may I use your ipad for an hour?—Sorry. I ________ on it.A．work B．a(chǎn)m working C．have worked D．worked32．Don’t make any noise, Jim! Your little sister ________ now.A．sleeps B．slept C．is sleeping D．will sleep33．— Dad, I can’t work out this math problem. Can you give me a hand?— Wait a moment. I ________ o