【正文】 se 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?！獩]問題。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)在解析：D【詳解】句意：——彼得，請(qǐng)安靜。——沒問題。12．D【詳解】句意：——彼得，請(qǐng)安靜。根據(jù)句意可知，貝蒂不能加入我們是因?yàn)樗诖驋呓淌?，?qiáng)調(diào)此時(shí)此刻正在做什么，用現(xiàn)在進(jìn)行時(shí)(am/is/are doing)。她正在打掃教室?？疾閯?dòng)詞時(shí)態(tài)。11．D【詳解】句意：貝蒂不能和我們一起玩紙牌游戲。考查動(dòng)詞時(shí)態(tài)。根據(jù)“What are you up to”可知，答語要用現(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a解析：C【詳解】句意：——嗨，大明。你在忙什么？——我正在做一個(gè)關(guān)于家族史的項(xiàng)目。故選C。考查動(dòng)詞時(shí)態(tài)。根據(jù)前句“Not now”語境可知，后句的動(dòng)作正在進(jìn)行，應(yīng)用現(xiàn)在進(jìn)行時(shí)，構(gòu)成解析：C【詳解】句意：——去看電影怎么樣？有部叫《嗨，媽媽》的新電影。——現(xiàn)在不行，我在幫我弟弟托尼學(xué)英語。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D?！@就來?？疾楝F(xiàn)在進(jìn)行時(shí)。8．D【詳解】句意：——托尼，快點(diǎn)！我們現(xiàn)在在等你。根據(jù)“He is in the kitchen.”和“now”可知，該句為現(xiàn)在進(jìn)行時(shí)，謂語結(jié)構(gòu)是：be+動(dòng)詞的現(xiàn)在分詞。考查現(xiàn)在進(jìn)行時(shí)。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。他正在洗碗。故選D。plays動(dòng)詞第三人稱單數(shù)形式；played表一般過去時(shí)；will play表一般將來時(shí)；is playing表現(xiàn)在進(jìn)行時(shí)。根據(jù)句中“解析：D【詳解】句意：聽！這個(gè)男孩又在彈鋼琴了?？疾楝F(xiàn)在進(jìn)行時(shí)。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。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)，故選解析：D【詳解】句意：——莉莉，你父親在哪里？——他正在廚房做飯。5．D【詳解】句意：——莉莉，你父親在哪里？——他正在廚房做飯?？疾楝F(xiàn)在進(jìn)行時(shí)?？疾楝F(xiàn)在進(jìn)行時(shí)。故選D?？疾楝F(xiàn)在進(jìn)行時(shí)。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。她正在打掃教室。故選B。cooks烹飪，一般現(xiàn)在時(shí)；is cooking烹飪，現(xiàn)在進(jìn)行時(shí)；will cook烹飪，一般將來時(shí)；cooked烹飪，一般過去時(shí)。cooks烹飪，一般現(xiàn)在時(shí)；is cooking烹飪，現(xiàn)在進(jìn)行時(shí)；will cook烹飪，一般將來時(shí)；cooked烹飪，一般過解析：B【詳解】句意：——媽媽在哪里？——她正在廚房做飯。2．B【詳解】句意：——媽媽在哪里？——她正在廚房做飯。根據(jù)“Let’s go and help her”可知，此處指讓我們?nèi)椭谧鐾盹埖哪棠蹋蕿楝F(xiàn)在進(jìn)行時(shí)，其結(jié)構(gòu)為am/is/are doing。我們?nèi)椭伞？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．Be quiet, please. They _________ a meeting now.A．have B．had C．a(chǎn)re having D．were having21．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did22．— 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 cleaned23．— 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 waiting24．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking25．My father ________ Beijing next week.A．leaves for B．is leaving for C．left D．leaves26．—Where is your mother, Kitty?—She ________ dinner in the kitchen.A．cooks B．cooked C．is cooking D．will cook27．—Lucy, where is Mimi?—She ________ under the chair.A．sleeps B．slept C．is sleeping D．will sleep28．—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 made29．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 bee30．—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．You