【正文】 ’m sorry about that.A．presents B．presented C．has presented D．is presenting12．—Candy, could you please help me do the dishes?—Sorry, Mom. I ________ my homework.A．do B．did C．a(chǎn)m doing D．have done13．Excuse me. I really need to go now. My children _____________for me at school.A．a(chǎn)re waiting B．waits C．wait D．waited14．You’d better not disturb Kathy now as she ________ her speech for tomorrow’s meeting.A．is preparing B．will prepare C．was preparing D．has prepared15．Ladies and gentlemen, please remain in your seats, fasten your seat belt and bring your seat back. The plane________.A．takes off B．is taking off C．has taken off D．took off16．—It39。t e yet. I ___________for her.A．have waited B．a(chǎn)m waiting C．was waiting D．waited17．— 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．—Mom, it’s so late. Why don’t you go to bed?—Your brother hasn’t e back yet. I ________ for him.A．wait B．a(chǎn)m waiting C．has waited D．waited19．It dark. Shall I turn on the light？A．gets B．got C．is getting D．was getting20．— What’s that noise, Sam?— My little brother ________ his toy car.A．played B．is playing C．plays D．was playing21．— Tina, the TV show has already been on. Come and watch together. — Wait a moment. I ________ coffee in the kitchen.A．a(chǎn)m making B．have made C．make D．made22．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．The students in our group ________ the final preparation for the match. We are sure to win.A．made B．a(chǎn)re making C．make D．will make24．You had better not go this way. The workers _________ the road.A．have repaired B．a(chǎn)re repairing C．repaired D．will repair25．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking26．—How do you find your pany?—A little worried. We ________ ground as a leader in the field of IT with the others speeding up development.A．a(chǎn)re losing B．were losing C．lost D．have lost27．—Lucy, where is Mimi?—She ________ under the chair.A．sleeps B．slept C．is sleeping D．will sleep28．Xifeng Street is closed today because workers _______ some repairs.A．make B．made C．a(chǎn)re making D．were making29．—Where is your father, David?—He ________ the car in the garden.A．will wash B．washed C．is washing D．was washing30．Be quiet. Your brother ________ classes online.A．has B．is having C．will have D．had31．—Has your aunt finished writing her novel?—Not yet. She ________ it these days.A．wrote B．writes C．is writing D．will write32．— Where is Tom?— Look! He ________with the teacher over there.A．talk B．talks C．talked D．is talking33．—I can’t find David. Where is he?— He________ for tomorrow’s petition at home.A．prepares B．is preparing C．has prepared D．prepared34．—Jane,where are you?—Dad,I________ the car in the driveway. It is rea