【正文】 孩。故選D。考查動(dòng)詞時(shí)態(tài)。句中“Listen”是現(xiàn)在進(jìn)行時(shí)態(tài)的標(biāo)志詞，其結(jié)構(gòu)為am/is/are+動(dòng)詞現(xiàn)在分詞，主語(yǔ)“The birds”是復(fù)數(shù)，be動(dòng)詞解析：C【詳解】句意：聽(tīng)!鳥(niǎo)兒在窗外的樹(shù)上快樂(lè)地歌唱。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)語(yǔ)境可知，貝蒂不能來(lái)的原因是她正在打掃教室，故句子應(yīng)用現(xiàn)在進(jìn)行時(shí)，其構(gòu)成是am/is/are doing?？疾楝F(xiàn)在進(jìn)行時(shí)。根據(jù)問(wèn)句“What’s that noise, Mike?”可知，提到的聲響是現(xiàn)有的，結(jié)合答句中“now”可知，是說(shuō)現(xiàn)在正在進(jìn)行的動(dòng)作，用現(xiàn)在進(jìn)行時(shí)。4．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(chē)。解析：C【詳解】句意：看，許多人在公園里跳舞。3．C【詳解】句意：看，許多人在公園里跳舞?？疾閯?dòng)詞時(shí)態(tài)?？疾閯?dòng)詞時(shí)態(tài)。根據(jù)句中“Now”及句意可知，句中動(dòng)作表示正在進(jìn)行，表達(dá)“正在播放”應(yīng)該用現(xiàn)在進(jìn)行時(shí)，其構(gòu)成是am/is/are doing。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 watching33．— Tom, what’s your sister doing?— She ________ her homework in the study.A．does B．will do C．did D．is doing34．My grandma ________ the old photos. There is a big smile on her face.A．enjoys B．enjoyed C．will enjoy D．is enjoying35．Sorry, you can’t take the eraser away, Tony. I ________ it.A．have used B．used C．was using D．a(chǎn)m using36．Be quiet! The students ________ an English exam.A．take B．a(chǎn)re taking C．took D．have made37．—Bob, can you take the dog for a walk?—Sorr