【正文】 表示現(xiàn)在正在做某事，用現(xiàn)在進行時is having 故選C?？疾楝F(xiàn)在進行時?？疾閯釉~時態(tài)。我在上網(wǎng)課。故選D。故選D。故選D。故選C。根據(jù)“Not yet. She…it these days.”可知，動作還未完成，現(xiàn)在也在做，所以用現(xiàn)在進行時，故選C?？疾闀r態(tài)。故選A。我可以晚點再跟你談嗎？——沒問題。我在聽一個英語演講?！埖纫幌?，父親正在房間里打電話?？疾楝F(xiàn)在進行時?？疾閯釉~時態(tài)辨析。你能幫我一下嗎？——等一下?？疾閯釉~時態(tài)。故選A。你能幫我個忙嗎？——稍等。故選B。s dad?”可知，答語“他在澆花”應是現(xiàn)在進行時。根據(jù)“Not now,”可知，此處是說明現(xiàn)在正在做什么，用現(xiàn)在進行時。有一部新電影叫《復仇者聯(lián)盟4》。根據(jù) tomorrow及選項，可知謂解析：C【詳解】句意：——明天我將坐飛機去北京。reading 動名詞；am reading動詞的現(xiàn)在進行時；was reading過去進行時；have read動詞的現(xiàn)在完成時?？疾楝F(xiàn)在進行時。他在哪里？——哦，他在圖書館學習。我在做作業(yè)?？疾閯釉~時態(tài)。你在忙什么？——我正在做一個關(guān)于家族史的項目。根據(jù)“Sorry...”及“I will give it to you later.”可知，抱歉，我稍后給你。根據(jù)前句“The noise es from the boys.”語境可推知，后句中動作正在進行，應用現(xiàn)在進行時，構(gòu)成形式為be doing；主語“They”是復數(shù)形式，be用are；have的現(xiàn)在分詞是having。根據(jù)“I can’t lend you my English book...”可知，我不能把我的英語書借給你，說明這些天我在用它，符合語境；所以句子時態(tài)應為現(xiàn)在進行時?？疾楝F(xiàn)在進行時。她正在打掃教室。故選C。故選B。 ——他正在為下周舉行的英語演講比賽做準備。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 helped18．—Tom, where39。s dad?—Oh, he ________ the flowers in the garden.A．waters B．is watering C．watered D．has watered19．—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．— Tom, where is your little sister?— She _______ in the backyard now.A．is playing B．will play C．played D．plays21．— Dad, I can’t work out this math problem. Can you give me a hand?— Wait a moment. I ________ on the phone.A．a(chǎn)m talking B．will talk C．was talking D．have talked22．Joe, answer the phone for me. I ________ how to make dumplings in the kitchen.A．learned B．a(chǎn)m learning C．have learned D．learn23．— 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．— Hi, Tom. I can’t find David anywhere. Do you know where he is?—Oh, he ________ for tomorrow’s exam at home.A．prepares B．is preparing C．has prepared D．prepared25．—Where is your mother, Kitty?—She ________ dinner in the kitchen.A．cooks B．cooked C．is cooking D．will cook26．—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 made27．I can’t hear you. I ______ to an English speech.A．a(chǎn)m listening B．listen C．was listening28．—I _______ a book report now. Can I talk to you later?—No problem.A．write B．wrote C．a(chǎn)m writing D．was writing29．—Can Peter play games with us, Mrs. Hawking?—Wait a minute. He ________ a shower.A．is taking B．taken C．took D．was taking30．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did31．—Has your aunt finished writing her novel?—Not yet. She ________ it these days.A．wrote B．writes C．is writing D．will write32．—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