【正文】 解析：D【詳解】句意：——湯姆在哪里？ ——看！他正在那邊和老師說話。根據(jù)“Sorry...”及“I will give it to you later.”可知，抱歉，我稍后給你。根據(jù)“Where is your father, David?”可知，此處是詢問當(dāng)前的情況，強(qiáng)調(diào)動作正在進(jìn)行，用現(xiàn)在進(jìn)行時(shí)，結(jié)構(gòu)為：am/is/are + 動詞現(xiàn)在分詞，主語為he，be動詞用is。她正在打掃教室。 ——對此我很抱歉。根據(jù)上文“Just a moment, Mom”可知，此處指的是魯比正在做其他的事情，故句子應(yīng)用現(xiàn)解析：B【詳解】句意：——魯比，你能幫我洗碗嗎？ ——等一下，媽媽?？疾楝F(xiàn)在進(jìn)行時(shí)。我正用著呢。32．C【詳解】句意：——Jane，你在哪里？——爸爸，我正在車道上洗車。31．B【詳解】句意：你最好不要走這邊。根據(jù)“Where’s your father, Lily?”可知，此處是詢問當(dāng)前的情況，表示正在做某事，用現(xiàn)在進(jìn)行時(shí)，故選D。表示現(xiàn)在正在做某事，用現(xiàn)在進(jìn)行時(shí)is having 故選C?？疾楝F(xiàn)在進(jìn)行時(shí)。我在聽一個(gè)英語演講?？疾榫渥訒r(shí)態(tài)。根據(jù)題干“he…for tomorrow’s exam at home”和語境，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)。23．B【詳解】句意：——嗨，湯姆。我正在掃地?？疾闀r(shí)態(tài)辨析?？疾楝F(xiàn)在進(jìn)行時(shí)。19．B【詳解】句意：——媽媽在哪里？——她正在廚房做飯。18．C【詳解】句意：天正在變黑，我可以打開燈嗎？考查現(xiàn)在進(jìn)行時(shí)。17．B【詳解】句意：——弗蘭克在哪兒？——他正在房間里聽音樂。謂語動詞leave是位移動詞，用進(jìn)行時(shí)表示將來。根據(jù)“Listen!”可知，本句時(shí)態(tài)是現(xiàn)在進(jìn)行時(shí)，主語“Someone”表單數(shù)，故選D。故選B。你的毛衣穿反了。故選A?？疾閯釉~時(shí)態(tài)辨析。根據(jù)前句“The zoo keeper is worried”的語境可知，后句動作應(yīng)是解析：C【詳解】句意：動物園管理員很擔(dān)心，因?yàn)橛慰蛿?shù)量越來越少。你在忙什么？——我正在做一個(gè)關(guān)于家族史的項(xiàng)目。故選D。根據(jù)“now”可知要用現(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為be doing。故選D。故選C。選項(xiàng)A為一般將來時(shí)；選項(xiàng)B為現(xiàn)在進(jìn)行時(shí)；選項(xiàng)C為現(xiàn)在完成時(shí)；選項(xiàng)D為過去進(jìn)行時(shí)。根據(jù)“Peter, please be quiet.”可知，現(xiàn)在要保持安靜，此處表示你哥哥現(xiàn)在正在錄音，因此用現(xiàn)在進(jìn)行時(shí)am/is/are+doing結(jié)構(gòu)，故選D。t seen Jack for a couple of days. —He ________ for the English speaking petition which will take place next week.A．will prepare B．is preparing C．has prepared D．was preparing3．I must leave now. My brother ________ for me outside.A．waits B．waited C．is waiting D．was waiting4．Listen! The boy ________ the piano again.A．plays B．played C．will play D．is playing5．—Hello, may I speak to Jim?—Sorry, he ________ an important meeting now.A．has B．is having C．will have D．was having6．I can’t lend you my English book, because I _______ it these days.A．use B．have used C．used D．a(chǎn)m using7．— What’s that noise, Sam?— My little brother ________ his toy car.A．played B．is playing C．plays D．was playing8．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．a(chǎn)m doing D．was doing9．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 bee10．— Where are the officers? — Look! They ________ the elephant in the palace now.A．touched B．will touch C．touch D．a(chǎn)re touching11．—Can Peter play games with us, Mrs. Hawking?—Wait a minute. He ________ a shower.A．is taking B．taken C．took D．was taking12．You’d better not disturb Kathy now as she ________ her speech for tomorrow’s meeting.A．is preparing B．will prepare C．was preparing D．has prepared13．— 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 worn14．—What’s the terrible noise?—The students ________ for a party.A．have prepared B．a(chǎn)re preparing C．prepare D．will prepare15．Listen! Someone __________ in the next room.A．sings B．sang C．was singing D．is singing16．—Yesterday I received a letter from .—You d