50．A．Working       B．works           C．work              D．to work

(A)

    Betty is an American(美国的)school girl．She is very happy because her father and mother will take her to China for a visit．They are going to fly from New York on June 30 and get to Beijing on July l．They will stay at Lido Holiday Inn(旅馆)．Their Chinese friends will show them around Beijing．They are going to visit the Palace Museum，the Summer Palace，the Temple of Heaven(天坛)and the Great Wall．They will also visit some Chinese homes and try some Chinese food．They will spend(花费)a week in Beijing and then go to Xi an，Guilin and some other places for sightseeing．The whole mp will take(花费)three weeks and she is sure she will have a great time in China．

    49．A．come to home        B．come home     C．comes to home       D．comes home

    48．A．at                 B．on         C．of                   D．to

    47．A．In weekdays  B．In Sunday       C．On weekdays   D．On Sunday

    46．A．has               B．have      C．is having         D．are having

    45．A．go to school  B．go to bed        C．get to school    D．get home

    44．A．their             B．my        C．his                  D．her

    43．A．get to school  B．get to home      C．get school              D．get home