【正文】 g?？疾闀r態(tài)。根據(jù)“Can you give me a hand?”和“Wait a moment.”可知，空處是描述此時此刻正在進行的動作，所以用現(xiàn)在進行時（am/is/are doing）。根據(jù)“Can you give me a hand?”和“Wait a moment.”可知解析：A【詳解】句意：——爸爸，我解不出這道數(shù)學題。30．A【詳解】句意：——爸爸，我解不出這道數(shù)學題。她正在打掃教室。29．D【詳解】句意：貝蒂不能和我們一起玩紙牌游戲?？疾楝F(xiàn)在進行時。考查動詞的時態(tài)。根據(jù)“Look out!”可知，此處提示說話時某事正在發(fā)生，應用現(xiàn)在進行時。故選C。根據(jù)“Xifeng Street is closed today”可知，今天工人正在維修，因此應該使用現(xiàn)在進行時。根據(jù)“Lucy, where is Mimi?”可知要回答露西現(xiàn)在正在做什么，應該用現(xiàn)在進行時。根據(jù)“Lucy, where is Mimi?”可知要回答露西現(xiàn)在正在做什么，應該用現(xiàn)在進行時?？疾楝F(xiàn)在進行時。故選A。根據(jù)“now”可知，時態(tài)為現(xiàn)在進行時，結構為：am/is are doing，主語為She，be動詞用is。根據(jù)“We are sure to win.”可知正在做最后的準備，用現(xiàn)在進行時，其結構為am/is/are doing?？疾闀r態(tài)辨析。根據(jù)“Sorry, I can’t…Would you mind going later?”可知，現(xiàn)在不行，提議晚點去，所以此處描述正在做的事，用現(xiàn)在進行時。你介意晚一點去嗎？考查現(xiàn)在進行時。根據(jù)“What’s that noise, Sam?”判斷，此處應該用現(xiàn)在進行時，其結構是：be（am/is/are）+動詞的現(xiàn)在分詞。20．B【詳解】句意：——什么聲音，山姆？ ——我弟弟正在玩他的玩具車。waters一般現(xiàn)在時；is watering現(xiàn)在進行時；watered一般過去時；has watered現(xiàn)在完成時。19．B【詳解】句意：——湯姆，爸爸在哪兒？ ——喔，他正在花園里的澆花。考查時態(tài)?？疾闀r態(tài)。結合語境及選項，故選C?？疾橐话銓頃r?？疾橐话銓頃r。主語是I，此處用am reading?！纫粫?，我正在讀我的郵件。16．B【詳解】句意：——趕緊?？疾闀r態(tài)?？疾闀r態(tài)?？疾闀r態(tài)。故選A。我真得要走了。我真得要走了?！獩]問題。——沒問題。根據(jù)后句“I was told it would e in two days.”可推知，空處的動作應是正在進行，應用現(xiàn)在進行時，構成形式為：be doing；主語“I”是第一人稱單數(shù)形式，助動詞應用am；wait的現(xiàn)在分詞是waiting?？疾閯釉~時態(tài)?？疾閯釉~時態(tài)。你在忙什么？——我正在做一個關于家族史的項目?？疾楝F(xiàn)在進行時。 ——對此我很抱歉?？疾閯釉~時態(tài)。他們正在開派對?？疾閯釉~時態(tài)。故選D。根據(jù)句中“解析：D【詳解】句意：聽！這個男孩又在彈鋼琴了。故選D?？疾闀r態(tài)?？疾楝F(xiàn)在進行時的用法。故選B?？疾閯釉~時態(tài)。我稍后給你。根據(jù)上文“You look absentminded.”可知是詢問現(xiàn)在做的事情，此句時態(tài)是現(xiàn)在進行時。我的一個老朋友要來了?？疾榫渥拥臅r態(tài)。2．B【詳解】句意：——你看起來心不在焉?？疾楝F(xiàn)在進行時。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．am helping D．have helped19．—Tom, where39。 expect B．Are。t seen each other for a long time.A．Do。 expect3．—Jack, can you lend me your camera?—Sorry, I________ it. I will give it to you later.A．used B．am using C．have used D．was using4．—Can Peter play games with us, Mrs. Hawking?—Wait a minute. He ________ a shower.A．is taking B．taken C．took D．was taking5．—What’s that noise, Mike?—My little sister ________ with her toy car now.A．plays B．played C．will play D．is playing6．Listen! The boy ________ the piano again.A．plays B．played C．will play D．is playing7．I can’t lend you my English book, because I _______ it these days.A．use B．have used C．used D．am using8．The noise es from the boys. They _______ a party.A．have B．are having C．will have D．have had9．— Shh, don’t make noise! Mrs. Smith ________ the latest news in the studio.— I’m sorry about that.A．presents B．presented C．has presented D．is presenting10．—Hi, Daming. What are you up to?—I ________ a project about family history.A．do B．did C．am doing D．was doing11．—John, how was your interview on Monday?—No idea. I for the result. I was told it would e in two days.A．wait B．waited C．will wait D．am waiting12．—Peter, please be quiet. Your brother ________ on the phone.—No problem.A．records B．recorded C．was recording D．is recording13．Excuse me. I really need to go now. My children _____________for me at school.A．are waiting B．waits C