【正文】 解析：C【詳解】句意：——瑪麗，我們?nèi)タ措娪鞍??？疾閯?dòng)詞時(shí)態(tài)。考查動(dòng)詞時(shí)態(tài)。故選D。根據(jù)“We are sure to win.”可知正在做最后的準(zhǔn)備，用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為am/is/are d解析：B【詳解】句意：我們組的同學(xué)正在為比賽做最后的準(zhǔn)備?？疾閯?dòng)詞時(shí)態(tài)。我被告知將它將在兩天后出來。根據(jù)“now”可知，時(shí)態(tài)為現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為：am/is are doing，主語為She，be動(dòng)詞用is?？疾闀r(shí)態(tài)。根據(jù)“Xifeng Street is closed today”可知，今天工人正在維修，因此應(yīng)該使用現(xiàn)在進(jìn)行時(shí)。我正在做作業(yè)?？疾楝F(xiàn)在進(jìn)行時(shí)。do做，是一個(gè)動(dòng)詞?？疾闀r(shí)態(tài)?？疾闀r(shí)態(tài)辨析?？疾楝F(xiàn)在進(jìn)行時(shí)。根據(jù)時(shí)間狀語at the moment，可知句子時(shí)態(tài)用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為be+動(dòng)詞的現(xiàn)在分詞，主語Many children是復(fù)數(shù)，be動(dòng)詞用are，face的現(xiàn)在分詞是facing；故選D。考查時(shí)態(tài)辨析。根據(jù)后句“I was told it would e in t解析：D【詳解】句意：——John，你周一的面試怎么樣？——不知道，我在等結(jié)果。根據(jù)“Sorry...”及“I will give it to you later.”可知，抱解析：B【詳解】句意：——杰克，你能把你的照相機(jī)借給我嗎？——抱歉，我正在用?？疾閯?dòng)詞時(shí)態(tài)和the number of的用法。根據(jù)“Be quiet.”及語境可知，此處表達(dá)的動(dòng)作是正在進(jìn)行的，應(yīng)用現(xiàn)在進(jìn)行時(shí)，故選B。你哥哥在網(wǎng)上上課?？疾閯?dòng)詞時(shí)態(tài)和the number of的用法?？疾閯?dòng)詞時(shí)態(tài)?？疾閯?dòng)詞時(shí)態(tài)。考查時(shí)態(tài)辨析?？疾楝F(xiàn)在進(jìn)行時(shí)。根據(jù)上文“can you answer the door?”可知，此時(shí)母親正在清掃房間，無法去開門，所以應(yīng)用現(xiàn)在進(jìn)行時(shí)，故選C。故選D。故選B。故選D。故選D。do一般現(xiàn)在時(shí)，原形； am doing現(xiàn)在進(jìn)行時(shí)；did一般過去時(shí)；根據(jù)“Sorry, Amy”拒絕和對(duì)方一起出去購物，可知此處指“正在做作業(yè)”，用現(xiàn)在進(jìn)行時(shí)，其謂語動(dòng)詞構(gòu)成為“be+現(xiàn)在分詞”；故選B。28．B【詳解】句意：——蒂娜，我們出去逛街吧。故選B?？疾閯?dòng)詞時(shí)態(tài)。根據(jù)“I have no idea”可知，此處表示我現(xiàn)在不知道，現(xiàn)在正在解析：D【詳解】句意：——海倫，你在星期一的英語比賽怎么樣？——我不知道，我正在等結(jié)果。你能幫我一下嗎？——等一下。考查時(shí)態(tài)辨析?？疾楝F(xiàn)在進(jìn)行時(shí)。你在忙什么？——我正在做一個(gè)關(guān)于家族史的項(xiàng)目。考查動(dòng)詞時(shí)態(tài)。 ——現(xiàn)在不行，我在幫我弟弟大衛(wèi)學(xué)數(shù)學(xué)。考查時(shí)態(tài)。根據(jù)題干中“Where is he?”可知要回答現(xiàn)在在哪里，用現(xiàn)在進(jìn)行時(shí)表示“正在圖書館學(xué)習(xí)”，其解析：C【詳解】句意：——我在教室里找不到邁克了?？疾闀r(shí)態(tài)。wear穿；根據(jù)“I’ll have it changed immediately解析：B【詳解】句意：——Lena，我想今天早上你很匆忙。prepare準(zhǔn)備；is preparing現(xiàn)在進(jìn)行時(shí)；will prepare一般將來時(shí)；was prepa解析：A【詳解】句意：你最好現(xiàn)在不要打擾凱西，因?yàn)樗跒槊魈斓臅?huì)議準(zhǔn)備演講?？疾闀r(shí)態(tài)。11．A【詳解】句意：——你好！我可以和湯姆講話嗎？——等一下，他正在發(fā)電子郵件。故選D。他們現(xiàn)在正在開會(huì)。——這就來。根據(jù)問句“where is your little sister”及后面的now可知，此處強(qiáng)調(diào)動(dòng)作正在進(jìn)行，應(yīng)該用現(xiàn)解析：A【詳解】句意：——湯姆，你的小妹妹在哪里?——她現(xiàn)在正在后院玩。will wash動(dòng)詞的一般將來時(shí)形式；is washing動(dòng)詞的現(xiàn)在進(jìn)行時(shí)形式；washes動(dòng)詞的三單形式；was解析：B【詳解】句意：——約翰在哪里？——他在廚房里。根據(jù)前句“The noise es from the boys.”語境可推知，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：噪音來自那群男孩?？疾閯?dòng)詞時(shí)態(tài)。get變得。s go to the cinema. There’s a new movie called Avengers IV. —Not now, I _____________ my brother David with his math.A．help B．helped C．a(chǎn)m helping D．have helped19．—Hey! You nearly hit the tree! What’s up?— Sorry, I ________ the trip to my hometown.A．think about B．a(chǎn)m thinking about C．was thinking about D．thought about20．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．a(chǎn)m doing D．was doing21．— Where is Tom?— Look! He ________with the teacher over there.A．talk B．talks C．talked D．is talking22．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 make23．— Mom, I’m busy making the bed. Can you give me a hand? — Wait a moment. I ________ the floor.A．a(chǎn)m cleaning B．will clean C．was cleaning D．have cleaned24．— Helen, how was your English petition on Monday?— I have no idea, I _________ for the result. I was told it would e out in two days.A．was waiting B．waited C．will wait D．a(chǎn)m waiting25．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking26．My father ________ Beijing next week.A．leaves for B．is leaving for C．left D．leaves27．Xifeng Street is