【正文】 解析：B【詳解】句意：安靜點。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，結(jié)構(gòu)為：am/is/are + 動詞現(xiàn)在分詞，主語為he，be動詞用is。 ——對此我很抱歉。根據(jù)“It’s 4 o’clock in the afternoon.”可知，此處強(qiáng)調(diào)在某一時刻正在發(fā)生的動作，用現(xiàn)解析：B【詳解】句意：現(xiàn)在是下午4點。根據(jù)上文“could you help pick up the phone”，結(jié)合麥琪的肯定回答，可知ri解析：D【詳解】句意：——麥琪，你能幫我接電話嗎？它在響?？疾楝F(xiàn)在進(jìn)行時。 ——我來了，媽媽?？疾楝F(xiàn)在進(jìn)行時。31．C【詳解】句意：——你姑姑寫完小說了嗎?？——現(xiàn)在還沒有。我正在打電話。表示現(xiàn)在正在做某事，用現(xiàn)在進(jìn)行時is having 故選C。我可以晚點再跟你談嗎？——沒問題?！炷模√ｋU了。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。隨著其他公司加快發(fā)展，我們在信息技術(shù)領(lǐng)域的領(lǐng)導(dǎo)地位正在逐漸喪失。故解析：A【詳解】句意：——琳達(dá)，你媽媽在干什么？ ——她現(xiàn)在正在廚房做飯。你能幫我一下嗎？——等一下。你介意晚一點去嗎？考查現(xiàn)在進(jìn)行時。考查動詞時態(tài)辨析?？疾閯釉~時態(tài)。故選B?？疾榫渥拥臅r態(tài)。我的一個老朋友要來了。wait表一般現(xiàn)在時；am waiting表現(xiàn)在進(jìn)行時；has waited表現(xiàn)在解析：B【詳解】句意：——媽媽，現(xiàn)在很晚了。reading 動名詞；am reading動詞的現(xiàn)在進(jìn)行時；was reading過去進(jìn)行時；have read動詞的現(xiàn)在完成時。謂語動詞leave是位移動詞，用進(jìn)行時表示將來?？疾闀r態(tài)?？疾楝F(xiàn)在進(jìn)行時。12．D【詳解】句意：——我可以用你的電腦嗎？——對不起，我正在用它工作。11．C【詳解】句意：看，許多人在公園里跳舞。我的孩子們在學(xué)校等我。9．D【詳解】句意：——邁克，那是什么聲音？——我的弟弟現(xiàn)在正在玩他的玩具汽車。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?，故為現(xiàn)在進(jìn)行時，其結(jié)構(gòu)為am/is/are doing。根據(jù)“What’s that noise, Sam?”判斷，此處應(yīng)該用現(xiàn)在進(jìn)行時，其結(jié)構(gòu)是：be（am/is/are）+動詞的現(xiàn)在分詞。根據(jù)問句“where is your little sister”及后面的now可知，此處強(qiáng)調(diào)動作正在進(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。plays動詞第三人稱單數(shù)形式；played表一般過去時；will play表一般將來時；is playing表現(xiàn)在進(jìn)行時。3．C【詳解】句意：我現(xiàn)在必須離開了，我哥哥正在外面等我?？疾閯釉~時態(tài)。 expect18．—Where is Frank?—He _________ to music in his room.A．listens B．is listening C．listened D．was listening19．—Where is mum？ —She________in the kitchen．A．cooks B．is cooking C．will cook D．cooked20．— Where are the officers? — Look! They ________ the elephant in the palace now.A．touched B．will touch C．touch D．a(chǎn)re touching21．—Ethan, let’s go to play basketball, shall we?—Sorry, I can’t. I ________Yao Ming’s game. Would you mind going later?A．watch B．have watched C．a(chǎn)m watching D．was watching22．— 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．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking24．—How do you find your pany?—A little worried. We ________ ground as a leader in the field of IT with the others speeding up development.A．a(chǎn)re losing B．were losing C．lost D．have lost25．Xifeng Street is closed today because workers _______ some repairs.A．make B．made C．a(chǎn)re making D．were making26．—Look out! Something ________ down from the tree.—Dear me! It’s too dangerous.A．falls B．fell C．is falling D．was falling27．—I _______ a book report now. Can I talk to you later?—No problem.A．write B．wrote C．a(chǎn)m writing D．was writing28．— May I speak to Mr. Brown?— I am sorry. He ________ an important meeting in his office now.A．has B．had C．is having D．will have29．Listen! The birds ________ happily in the tree outside the window.A．sing B．sang C．a(chǎn)re singing D．were singing30．