The joke told by Tom made us______, so our maths teacher couldn’t make himself______.
95. The scooter(滑板车) has been popular _______ a lot of children since the year before last.
94. If you don’t believe me, you’d better go to have a look at it _____ person.
93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.
92. It was good ______ you to invite me to join in the party.
91. They are going to erect(树立) a monument _____ memory of the men who offered their lives in defense of their country.