—What’s the matter with you, Tom?
—______ the ladder, one of arms has been broken.
| A．Climbing | B．While climbing |
| C．To climb | D．While I was climbing |
95. The scooter(滑板车) has been popular _______ a lot of children since the year before last.
| A．by | B．for | C．in | D．With |
94. If you don’t believe me, you’d better go to have a look at it _____ person.
| A．in | B．on | C．at | D．With |
93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.
| A．on his own | B．in his own | C．of his own | D．for his own |
92. It was good ______ you to invite me to join in the party.
| A．for | B．in | C．to | D．Of |
91. They are going to erect(树立) a monument _____ memory of the men who offered their lives in defense of their country.
| A．on | B．for | C．to | D．in |