MR AND MRS HUDSON ARE ALWAYS___________ WITH EACH OTHER ABOUT HOW T...

40.Mr and Mrs Hudson are always___________ with each other about how to bring uptheir children.A.annoying B.arguing C. discussing D. shoutingRead the following passage and mark the letter A, B, C, or D to indicate the correctword for each of the blanks.An American, Charles D. Seeberger, invented moving stairs to transport people in the1890s. He (41)________ this invention an ‘escalator’, (42)________ the name from theLatin word ‘scala’, (43)__________ means ‘ladder’. Escalators move people up anddown short (44)___________ . Lifts do the same, but only move (45)_____ small numberof people. If an escalator breaks down, it can still be (46)_____ as ordinary stairs. Anescalator can move (47)_________ 8,000 and 9,600people an hour, and it (48)_______ not need a person to operate it. Towards the end ofthe nineteenth century, cities were (49)______________ more crowded and the firstescalators were built at railway stations and in big department (50)______ so that peoplecould move about more quickly. Today we see escalators everywhere.