39.While studying at U.C.L.A.,Mr.Wang（ ）his old friend, whom he has not seen for nearly twenty years.

86.I’m awfully sorry, but I had no alternative. I simply（ ）what I did.

85.In recent years many football clubs（ ）as business to make a profit.

84.The crazy fans（）patiently for two hours and they would wait till the movie star arrived.

83.The new staff resigned last Monday after（ ）to work overtime.

82.When we receive the goods you return to us, you（ ）a full refund with a week.

81.While nuclear weapons present grave（ ）dangers, the predominant crisis of overpopulation is with us today.

80.Our teacher was（ ）by the funny story.

79.Some people say that education is the bestfor children.

78.The ground around here is mostlyand not very good for farming.

77.His speech（ ）the young people to continue their study.