【正文】 _ an .A．is sending B．sent C．sends D．was sending4．Listen! The birds ________ happily in the tree outside the window.A．sing B．sang C．a(chǎn)re singing D．were singing5．—Where is your father, Lily?—He ________ in the kitchen.A．cooked B．cooks C．will cook D．is cooking6．—Hello, may I speak to Jim?—Sorry, he ________ an important meeting now.A．has B．is having C．will have D．was having7．—Where is John?—He is in the kitchen. He ________ the dishes now.A．will wash B．is washing C．washes D．washed8．Be quiet, please. They _________ a meeting now.A．have B．had C．a(chǎn)re having D．were having9．—Can Peter play games with us, Mrs. Hawking?—Wait a minute. He ________ a shower.A．is taking B．taken C．took D．was taking10．— Where are the officers? — Look! They ________ the elephant in the palace now.A．touched B．will touch C．touch D．a(chǎn)re touching11．—Where is your father, David?—He ________ the car in the garden.A．will wash B．washed C．is washing D．was washing12．— 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 worn13．—What’s the terrible noise?—The students ________ for a party.A．have prepared B．a(chǎn)re preparing C．prepare D．will prepare14．—Yesterday I received a letter from .—You did? I hear he________for America next year.A．has left B．leaves C．left D．is leaving15．—Hurry up!—One moment. I ________ my s.A．reading B．a(chǎn)m reading C．was reading D．have read16．—I _____to Beijing tomorrow. —Have a good trip!A．flies B．fly C．a(chǎn)m flying D．flew17．—Mom, it’s so late. Why don’t you go to bed?—Your brother hasn’t e back yet. I ________ for him.A．wait B．a(chǎn)m waiting C．has waited D．waited18．—Mary, let39。由“I really need to go now. My children…for me at school”可知解析：A【詳解】句意：請(qǐng)?jiān)徫?。她正在圖書(shū)館看書(shū)。s not at home.”可知，這里是現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)是be doing的形式。4．C【詳解】句意：聽(tīng)!鳥(niǎo)兒在窗外的樹(shù)上快樂(lè)地歌唱?？疾闀r(shí)態(tài)?？疾楝F(xiàn)在進(jìn)行時(shí)。他正在洗碗。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?？疾楝F(xiàn)在進(jìn)行時(shí)的用法。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)。12．B【詳解】句意：——Lena，我想今天早上你很匆忙。wear穿；根據(jù)“I’ll have it changed immediately”可知在說(shuō)話的時(shí)候“毛衣穿反”這個(gè)動(dòng)作正在進(jìn)行，用現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)是：am/is/are + doing；主語(yǔ)是“You”，be動(dòng)詞用are?！娴?？ 我聽(tīng)說(shuō)他明年要去美國(guó)。根據(jù)next year可知是一般將來(lái)時(shí)態(tài)。考查動(dòng)詞的的時(shí)態(tài)。結(jié)構(gòu)為：主語(yǔ)+will/shall+動(dòng)詞原形、主語(yǔ)+am/is/are+動(dòng)名詞。17．B【詳解】句意：——媽媽，現(xiàn)在很晚了。wait表一般現(xiàn)在時(shí)；am waiting表現(xiàn)在進(jìn)行時(shí)；has waited表現(xiàn)在完成時(shí)；waited表一般過(guò)去時(shí)。 ——現(xiàn)在不行，我在幫我弟弟大衛(wèi)學(xué)數(shù)學(xué)。根據(jù)題解析：C【詳解】句意：天正在變黑，我可以打開(kāi)燈嗎？考查現(xiàn)在進(jìn)行時(shí)。考查時(shí)態(tài)。我正在做作業(yè)。我正在廚房學(xué)習(xí)如何包餃子。故選B?？疾閯?dòng)詞時(shí)態(tài)。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(yǔ)為She，be動(dòng)詞用is。隨著其他公司加快發(fā)展，我們?cè)谛畔⒓夹g(shù)領(lǐng)域的領(lǐng)導(dǎo)地位正在逐漸喪失。根據(jù)“Lucy, where is Mimi?”可知要回答露西現(xiàn)在正在做什么，應(yīng)該用現(xiàn)在進(jìn)行時(shí)?？疾閯?dòng)詞時(shí)態(tài)辨析。考查動(dòng)詞時(shí)態(tài)?？疾闀r(shí)態(tài)。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)解析：B【詳解】句意：——瑪麗，我可以用你的ipad一個(gè)小時(shí)嗎？——對(duì)不起。考查動(dòng)詞時(shí)態(tài)。根據(jù)句中“Look!”提示，此處表示正在發(fā)生的動(dòng)作，故句子應(yīng)用現(xiàn)在進(jìn)行時(shí)。根據(jù)“Where’s Nick?”可知要回答現(xiàn)在在做什么，用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為am/is/are doing。根據(jù)“There is a big smile on her face.”可知現(xiàn)在正在欣賞老照片，用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為am/is/are doing。clean動(dòng)詞原形；cleaned表一般過(guò)去時(shí)；am cleaning表現(xiàn)在進(jìn)行時(shí)；have cleaned表現(xiàn)在