【正文】 ___.—OK, Mum.A．rings B．rang C．will ring D．is ringing12．—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 have13．—May I use your puter? —Sorry, I ________ on it.A．work B．worked C．have worked D．a(chǎn)m working14．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 off15．—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．—I _____to Beijing tomorrow. —Have a good trip!A．flies B．fly C．a(chǎn)m flying D．flew17．—Mary, let39。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．I can’t lend you my English book, because I _______ it these days.A．use B．have used C．used D．a(chǎn)m using21．—Tina, let’s go out for shopping.—Sorry, Amy. I __________ my homework.A．do B．a(chǎn)m doing C．did22．You had better not go this way. The workers _________ the road.A．have repaired B．a(chǎn)re repairing C．repaired D．will repair23．— 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．—What is your mother doing, Linda? —She ________ dinner in the kitchen now.A．is cooking B．was cooking C．cooks D．cooking25．—Where is your mother, Kitty?—She ________ dinner in the kitchen.A．cooks B．cooked C．is cooking D．will cook26．—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．—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 made29．Betty can’t join us in the card game. She ________ the classroom.A．has cleaned B．was cleaning C．has cleaned D．is cleaning30．— May I speak to Mr. Brown?— I am sorry. He ________ an important meeting in his office now.A．has B．had C．is having D．will have31．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 make32．— 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．made33．— 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 talked34．—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．w