现在进行时难点练习

现在进行时难点练习一、选择题1．—I can't find Mike in the classroom. Where is he?—Oh, he ________ in the library.A．was studyingB．studiedC．is studyingD．studies2．—I haven't seen Jack for a couple of days. —He ________ for the English speaking competition which will take place next week.A．will prepareB．is preparingC．has preparedD．was preparing3．— Tom, where is your little sister?— She _______ in the backyard now.A．is playingB．will playC．playedD．plays4．—Tony, hurry up! We ________ for you now.—Just one minute.A．waitB．waitedC．have waitedD．are waiting5．Grandma ________ dinner. Let’s go and help her.A．is makingB．makesC．madeD．was making6．— Where are the officers? — Look! They ________ the elephant in the palace now.A．touchedB．will touchC．touchD．are touching7．—Candy, could you please help me do the dishes?—Sorry, Mom. I ________ my homework.A．doB．didC．am doingD．have done8．Excuse me. I really need to go now. My children _____________for me at school.A．are waitingB．waitsC．waitD．waited9．I must leave now. My brother ________ for me outside.A．waitsB．waitedC．is waitingD．was waiting10．Ladies and gentlemen, please remain in your seats, fasten your seat belt and bring your seat back. The plane________.A．takes offB．is taking offC．has taken offD．took off11．Listen! The birds ________ happily in the tree outside the window.A．singB．sangC．are singingD．were singing12．—What’s the terrible noise?—The students ________ for a party.A．have preparedB．are preparingC．prepareD．will prepare13．—Yesterday I received a letter from Mr.An.—You did? I hear he________for America next year.A．has leftB．leavesC．leftD．is leaving14．— Hurry up, Mary. The movie has already been on for ten minutes. —Wait a moment. I _______...