【正文】 詞用is?？疾楝F(xiàn)在進行時?？疾楝F(xiàn)在進行時。故選D?？疾楝F(xiàn)在進行時。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，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。now現(xiàn)在，是現(xiàn)在進行時的標(biāo)志，需用be doing結(jié)構(gòu)；主語students復(fù)數(shù)人稱，be動詞用are，故選C。他們現(xiàn)在正在開會。now現(xiàn)在，是現(xiàn)在進行時的標(biāo)志，需用be doing結(jié)構(gòu)；主語students復(fù)數(shù)人稱，be動詞用are，故選C。他們現(xiàn)在正在開會。故選A。考查時態(tài)?？疾闀r態(tài)。故選B。will wash動詞的一般將來時形式；is washing動詞的現(xiàn)在進行時形式；washes動詞的三單形式；washed動詞的過去式。他正在洗碗。考查現(xiàn)在進行時。6．B【詳解】句意：——約翰在哪里？——他在廚房里。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(yīng)用現(xiàn)在進行時，構(gòu)成形式為be doing；主語“They”是復(fù)數(shù)形式，be用are；have的現(xiàn)在分詞是having。他們正在開派對?？疾閯釉~時態(tài)。5．B【詳解】句意：噪音來自那群男孩。主語he后接be動詞is?？疾楝F(xiàn)在進行時。故選B。根據(jù)“now”可知要用現(xiàn)在進行時，其結(jié)構(gòu)為be doing。4．B【詳解】句意：——你好，我可以和吉姆講話嗎？——對不起，他正在開一個重要的會。根據(jù)句中“Listen”提示，動作正在發(fā)生，故應(yīng)用現(xiàn)在進行時?？疾楝F(xiàn)在進行時。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)在進行時。3．D【詳解】句意：聽！這個男孩又在彈鋼琴了。根據(jù)語境可知，英語演講比賽下周舉行，杰克現(xiàn)在應(yīng)該是正在準(zhǔn)備，因此用現(xiàn)在進行時；其結(jié)構(gòu)是：be（am/is /are）+動詞的現(xiàn)在分詞?？疾閯釉~時態(tài)。根據(jù)語解析：B【詳解】句意：——我有幾天沒見到杰克了?？疾閯釉~時態(tài)。2．B【詳解】句意：——我有幾天沒見到杰克了。根據(jù)句中“Now”及句意可知，句中動作表示正在進行，表達“正在播放”應(yīng)該用現(xiàn)在進行時，其構(gòu)成是am/is/are doing。根據(jù)句中“Now”及句意可知，句中動作表示正在進行，表達“正在播放”應(yīng)該用現(xiàn)在進行時，其構(gòu)成是am/is解析：B【詳解】句意：現(xiàn)在，位于森林路的ABC電影院正在放映老電影《羅馬假日》。t find Mike in the classroom. Where is he?—Oh, he ________ in the library.A．was studying B．studied C．is studying D．studies15．—Yesterday I received a letter from .—You did? I hear he________for America next year.A．has left B．leaves C．left D．is leaving16．—Hurry up!—One moment. I ________ my s.A．reading B．a(chǎn)m reading C．was reading D．have read17．—Where is Frank?—He _________ to music in his room.A．listens B．is listening C．listened D．was listening18．It dark. Shall I turn on the light？A．gets B．got C．is getting D．was getting19．—Where is mum？ —She________in the kitchen．A．cooks B．is cooking C．will cook D．cooked20．—Tom, please give me a hand in moving the piano. —Sorry. I ________ my car.A．repair B．repaired C．a(chǎn)m repairing D．have repaired21．—Where’s Nick?—He ________ classes at school.A．had B．will have C．is having D．was having22．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．You’d better not go this way. The workers _________ the road. A．have repaired B．a(chǎn)re repairing C．repaired D．will repair24．— 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．I can’t hear you. I ______ to an English speech.A．a(chǎn)m listening B．listen C．was listening26．—I _______ a book report now. Can I talk to you later?—No problem.A．write B．wrote C．a(chǎn)m writing D．was writing27．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did28．— 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 talked29．I must leave now. My brother ________ for me outside.A．waits B．wa