【正文】 ying B．studied C．is studying D．studies17．— Hurry up, Mary. The movie has already been on for ten minutes. —Wait a moment. I ________ some snacks in a shop.A．buy B．bought C．a(chǎn)m buying D．have bought18．—Hurry up!—One moment. I ________ my s.A．reading B．a(chǎn)m reading C．was reading D．have read19．—Mary, let39。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 helped20．—May I speak to Mr. Brown? —I am sorry. He _______ an important meeting in his office at the moment.A．has B．had C．is having D．will have21．— 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．— 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．— Helen, how was your English petition on Monday?— I have no idea, I _________ for the result. I was told it would e out in two days.A．was waiting B．waited C．will wait D．a(chǎn)m waiting24．My father ________ Beijing next week.A．leaves for B．is leaving for C．left D．leaves25．—Where is your mother, Kitty?—She ________ dinner in the kitchen.A．cooks B．cooked C．is cooking D．will cook26．—Lucy, where is Mimi?—She ________ under the chair.A．sleeps B．slept C．is sleeping D．will sleep27．Xifeng Street is closed today because workers _______ some repairs.A．make B．made C．a(chǎn)re making D．were making28．—Where’s Kelly, Mum?—She ________ a poster for the munity in her bedroom.A．makes B．will make C．made D．is making29．Listen! The birds ________ happily in the tree outside the window.A．sing B．sang C．a(chǎn)re singing D．were singing30．Don’t make any noise, Jim! Your little sister ________ now.A．sleeps B．slept C．is sleeping D．will sleep31．You’d better not go this way. The workers _________ the road. A．have repaired B．a(chǎn)re repairing C．repaired D．will repair32．—Where’s Nick?—He ________ classes at school.A．had B．will have C．is having D．was having33．— Amy, can you answer the door? I ________ the room.— I’m ing, Mum.A．clean B．cleaned C．a(chǎn)m cleaning D．have cleaned34．Sorry, you can’t take the eraser away, Tony. I ________ it.A．have used B．used C．was using D．a(chǎn)m using35．— 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 presenting36．Betty can’t join us in the card game. She ________ the classroom.A．has cleaned B．was cleaning C．has cleaned D．is cleaning37．—Where is your father, David?—He ________ the car in the garden.A．will wash B．washed C．is washing D．was washing38．—Jack, can you lend me your camera?—Sorry, I________ it. I will give it to you later.A．used B．a(chǎn)m using C．have used D．was using39．The zoo keeper is worried because the number of visitors ________ smaller and smaller.A．bee B．a(chǎn)re being C．is being